Need some video related help

[Punisher]

Story.
I had an old laptop with Windows 19.
I used the connect to wireless display option to connect to my LG TV.
Other then some game lag that I had the same issue with on the laptop alone I had no issues

I now have a mew higher end laptop. That fixed the game lag issue.
However when I now connect to the TV I get what I'm assuming are refresh issues. The TV does a full screen wipe if the screen on the laptop changes. Forget games (although it happens there too), I'm talling aboutjust in windows. Minimizing and maximizing a screen cause the TV wipe. I think my old laptop was either 120 or 300 hertz. New one is 2K and 60/240 hertz.
I tried dropping the laptop refresh rate but it didn't help. Windows says TV is 30 which makes sense.

Any ideas?

[hitbyambulance]

not sure what you mean by 'full screen wipe' - does it look like, say, 1 screen per second refresh rate? (..or does it go completely black/blank?)

i assume it does not do this if you plug the same computer and cable into an actual computer monitor?

what kind of cable are you using for connection, and from what port on the computer and what port on the TV?

does the TV have a 'Game' mode you can set it to?

I had an old laptop with Windows 19.

I now have a mew higher end laptop.

[Chraolic]

If you're getting black screen flickers, it might just be that the cable has too low throughput for 4K. I quickly found when I got a 4K TV that HDMI cables are not all the same, and you need one that's rated for at least 18 Gb/s for 4K/60FPS. That may also be why the TV shows up as 30FPS, if that's the maximum framerate the HDMI cable can handle that's what you're getting.

[Punisher]

Gonna try to explain wipe as best as i can.
Say I'm on a website with animations.
I click refresh or go to another animated page.
On the laptop it looks normal.
On the tv it doest a slow wipe from left to right where you can visibly see the change from one screen to the next almost like playing a game with an FPS of .5. It's a slide show.
If I play a video say on YT the same thing happens but a lot of times once the video is going it's fine.

Can't be a cable issue as it's a wireless connection.
Also tried dropping the resolution to 1920 x 1080 instead of 2k. I thought it helped for a second but then it came back.
I order a long HDMI cable to try. I'd rather not use this butit was cheap so it's more of a troubleshooting step than anythung permanent.
Also tried making sure both were on the same wireless SSID and with and without Ethernet as a backup.
It's just crazy that an older laptop with an older router seemed to work better then both being brand new. Everything else with them is great and my internet speeds went up but this is driving me nuts.

[hitbyambulance]

Can't be a cable issue as it's a wireless connection.

i'd personally be surprised if it actually worked 'correctly' - especially at the new machines' native resolution! there's a reason why home computers still have hard cable connections between GPU and monitor and haven't gone wireless. i personally never have tried wireless TV video connection from computer (only with mobile phone), but i strongly believe you will not have this issue with an actual video cable.

as to why your older computer would not have this issue... i'd have to research that. what was the screen resolution you were running with the older machine - 1920x1080? or lower?

[Punisher]

Yes 1920x1089. Changing the new laptop to the same res didn't help
I did het my extra long cable in today and it worked fine but that means having a wire cut across the living room.
It works fine but that means only using it during the day when my wife is at work.

[hitbyambulance]

gaming on a TV with a wireless video connection seems like a big ask (as they say) - the only way i know to successfully do it is with a streaming device intermediary over wifi (and even then, the graphics quality is going to be compressed/lossy). i just don't have enough experience in this area to give any more info.

[Anonymous Bosch]

I don't have much experience using a wireless TV video connection either, but do you know how fast your Wi-Fi network is and which 802.11 standard you are using?

If not, you can use the Command Prompt to easily check your Wi-Fi transfer rates, signal strength, and the supported 802.11 standards of your Wi-Fi interface by following these simple steps:

• Open Command Prompt by typing cmd into the Start menu and running cmd.exe
• Copy and paste or type in the following command, and press Enter:
  

  Code: Select all

  netsh wlan show interfaces

• Check your "Receive rate (Mbps)," "Transmit rate (Mbps)," and "Signal".
• Look for the "Radio types supported" section, which will display the 802.11 standards supported by your Wi-Fi interface, e.g., 802.11a/b/g/n/ac/ax/bn/be.

A faster and more reliable Wi-Fi network can help improve video lag when using the "Connect to a wireless display" feature in Windows, so it may be worth considering upgrading to newer Wi-Fi technology.

[Punisher]

I don't have much experience using a wireless TV video connection either, but do you know how fast your Wi-Fi network is and which 802.11 standard you are using?

If not, you can use the Command Prompt to easily check your Wi-Fi transfer rates, signal strength, and the supported 802.11 standards of your Wi-Fi interface by following these simple steps:

• Open Command Prompt by typing cmd into the Start menu and running cmd.exe
• Copy and paste or type in the following command, and press Enter:
  

  Code: Select all

  netsh wlan show interfaces

• Check your "Receive rate (Mbps)," "Transmit rate (Mbps)," and "Signal".
• Look for the "Radio types supported" section, which will display the 802.11 standards supported by your Wi-Fi interface, e.g., 802.11a/b/g/n/ac/ax/bn/be.

A faster and more reliable Wi-Fi network can help improve video lag when using the "Connect to a wireless display" feature in Windows, so it may be worth considering upgrading to newer Wi-Fi technology.

Not home but its a brand new wifi 6e router i got to get the most out of my new laptop.

[Punisher]

gaming on a TV with a wireless video connection seems like a big ask (as they say) - the only way i know to successfully do it is with a streaming device intermediary over wifi (and even then, the graphics quality is going to be compressed/lossy). i just don't have enough experience in this area to give any more info.

This was my thought originally. I was hoping for best but expecting the worst but then it just worked flawlessly.
It's the only reason my head is spinning from this.

[Anonymous Bosch]

I don't have much experience using a wireless TV video connection either, but do you know how fast your Wi-Fi network is and which 802.11 standard you are using?

If not, you can use the Command Prompt to easily check your Wi-Fi transfer rates, signal strength, and the supported 802.11 standards of your Wi-Fi interface by following these simple steps:

• Open Command Prompt by typing cmd into the Start menu and running cmd.exe
• Copy and paste or type in the following command, and press Enter:
  

  Code: Select all

  netsh wlan show interfaces

• Check your "Receive rate (Mbps)," "Transmit rate (Mbps)," and "Signal".
• Look for the "Radio types supported" section, which will display the 802.11 standards supported by your Wi-Fi interface, e.g., 802.11a/b/g/n/ac/ax/bn/be.

A faster and more reliable Wi-Fi network can help improve video lag when using the "Connect to a wireless display" feature in Windows, so it may be worth considering upgrading to newer Wi-Fi technology.

Not home but its a brand new wifi 6e router i got to get the most out of my new laptop.

An 802.11ax router certainly should be plenty sufficient. Still, it's worth using the command above to make sure everything checks out correctly with your transfer rates, signal strength, and radio type.

How far are your devices from your Wi-Fi router? Keep in mind, connections at the higher frequency of 6 GHz tend to fall off at shorter distances. So throughput on the 6 GHz band can certainly be blazing fast in the same room, but shifting a few dozen feet away with walls in between and interference from other wireless devices can greatly reduce speed.

Speaking of interference, it's also worth checking to make sure your wireless network is not being interfered with by other nearby networks and manually setting the channel(s) your router uses to avoid or minimise interference from others. To that end, I'd suggest using Nirsoft's free WifiInfoView tool to scan and choose the best channel(s) for your Wi-Fi router as shown in the following video:

[Blackhawk]

rds supported by your Wi-Fi interface, e.g., 802.11a/b/g/n/ac/ax/bn/be.
[/list]
Speaking of interference, it's also worth checking to make sure your wireless network is not being interfered with by other nearby networks and manually setting the channel(s) your router uses to avoid or minimise interference from others.

Always a good idea, with the caveat that, should you have more problems down the road, you may need to check again to make sure that the new neighbor isn't sharing a channel with you.

[Punisher]

Soo.. I've been using a long hdmi cable and it works but its annoying.
I tried casting again last night and...it worked again... nothing was changed it just started working.

Will check all that metwork stuff later on.

[Punisher]

and after several days of working, the problem is back. Crescenthawks is my SSID

Code: Select all

C:\Windows\System32>netsh wlan show interfaces
There is 1 interface on the system:
    Name                   : Wi-Fi
    Description            : Killer(R) Wi-Fi 6E AX1675i 160MHz Wireless Network Adapter (211NGW)
    GUID                   : 552f6935-6835-4270-bf45-7d5a840ffe78
    Physical address       : 04:e8:b9:37:71:a2
    Interface type         : Primary
    State                  : disconnected
    Radio status           : Hardware On
                             Software On
    Hosted network status  : Not available

WiFi scan.

Spoiler:

Code: Select all

==================================================
SSID              : 
MAC Address       : 72-A2-22-D4-46-EA
PHY Type          : 802.11n/ac/ax
RSSI              : -89
Signal Quality    : 18
Average Signal Quality: 18.0
Frequency         : 5.500
Channel           : 100
Information Size  : 289
Elements Count    : 22
Company           : 
Router Model      : 
Router Name       : 
Security          : WPA2-PSK
Cipher            : CCMP
Maximum Speed     : 1733 Mbps
Channel Width     : 80 MHz
Channels Range    : 98 - 114
BSS Type          : Infrastructure
WPS Support       : No
First Detection   : 3/7/2024 11:16:34 AM
Last Detection    : 3/7/2024 11:17:44 AM
Detection Count   : 70
Start Time        : 1/13/2024 2:30:23 PM
Minimum Signal Quality: 18
Maximum Signal Quality: 18
802.11 Standards  : 802.11d/e/h/i/y
Connected         : No
Stations Count    : 0
Channel Utilization: 1.2%
Country Code      : US
Description       : 
MAC Group         : 
==================================================

==================================================
SSID              : 52CCC7
MAC Address       : 74-44-01-52-CC-C6
PHY Type          : 802.11g/n
RSSI              : -45
Signal Quality    : 91
Average Signal Quality: 91.9
Frequency         : 2.437
Channel           : 6
Information Size  : 346
Elements Count    : 13
Company           : NETGEAR
Router Model      : OpenRG Platform Phase 4
Router Name       : OpenRG
Security          : WPA-PSK + WPA2-PSK
Cipher            : TKIP+CCMP
Maximum Speed     : 144 Mbps
Channel Width     : 20 MHz
Channels Range    : 4 - 8
BSS Type          : Infrastructure
WPS Support       : Configured
First Detection   : 3/7/2024 11:17:00 AM
Last Detection    : 3/7/2024 11:17:44 AM
Detection Count   : 44
Start Time        : 10/18/2023 3:09:35 PM
Minimum Signal Quality: 91
Maximum Signal Quality: 92
802.11 Standards  : 802.11i
Connected         : No
Stations Count    : 
Channel Utilization: 
Country Code      : 
Description       : 
MAC Group         : 2
==================================================

==================================================
SSID              : 52CCC7 5G
MAC Address       : 74-44-01-52-CC-C5
PHY Type          : 802.11n
RSSI              : -53
Signal Quality    : 86
Average Signal Quality: 83.5
Frequency         : 5.180
Channel           : 36
Information Size  : 356
Elements Count    : 11
Company           : NETGEAR
Router Model      : OpenRG Platform Phase 4
Router Name       : OpenRG
Security          : WPA-PSK + WPA2-PSK
Cipher            : TKIP+CCMP
Maximum Speed     : 300 Mbps
Channel Width     : 40 MHz
Channels Range    : 34 - 42
BSS Type          : Infrastructure
WPS Support       : Configured
First Detection   : 3/7/2024 11:16:26 AM
Last Detection    : 3/7/2024 11:17:44 AM
Detection Count   : 78
Start Time        : 10/18/2023 3:09:00 PM
Minimum Signal Quality: 81
Maximum Signal Quality: 86
802.11 Standards  : 802.11i
Connected         : No
Stations Count    : 
Channel Utilization: 
Country Code      : 
Description       : 
MAC Group         : 2
==================================================

==================================================
SSID              : crescenthawks 2.4
MAC Address       : 08-BF-B8-20-31-80
PHY Type          : 802.11g/n/ac/ax
RSSI              : -29
Signal Quality    : 99
Average Signal Quality: 98.6
Frequency         : 2.442
Channel           : 7
Information Size  : 559
Elements Count    : 26
Company           : ASUSTek COMPUTER INC.
Router Model      : Wi-Fi Protected Setup Router
Router Name       : RT-AXE7800
Security          : WPA2-PSK
Cipher            : CCMP
Maximum Speed     : 867 Mbps
Channel Width     : 40 MHz
Channels Range    : 3 - 11
BSS Type          : Infrastructure
WPS Support       : Configured
First Detection   : 3/7/2024 11:16:26 AM
Last Detection    : 3/7/2024 11:17:44 AM
Detection Count   : 78
Start Time        : 2/28/2024 11:40:59 PM
Minimum Signal Quality: 96
Maximum Signal Quality: 99
802.11 Standards  : 802.11d/e/h/i/k
Connected         : No
Stations Count    : 13
Channel Utilization: 9.0%
Country Code      : US
Description       : 
MAC Group         : 1
==================================================

==================================================
SSID              : crescenthawks 5
MAC Address       : 08-BF-B8-20-31-84
PHY Type          : 802.11n/ac/ax
RSSI              : -43
Signal Quality    : 92
Average Signal Quality: 91.9
Frequency         : 5.805
Channel           : 161
Information Size  : 602
Elements Count    : 29
Company           : ASUSTek COMPUTER INC.
Router Model      : Wi-Fi Protected Setup Router
Router Name       : RT-AXE7800
Security          : WPA2-PSK
Cipher            : CCMP
Maximum Speed     : 3120 Mbps
Channel Width     : 80 MHz
Channels Range    : 147 - 163
BSS Type          : Infrastructure
WPS Support       : Configured
First Detection   : 3/7/2024 11:16:26 AM
Last Detection    : 3/7/2024 11:17:44 AM
Detection Count   : 78
Start Time        : 2/28/2024 11:41:00 PM
Minimum Signal Quality: 91
Maximum Signal Quality: 93
802.11 Standards  : 802.11d/e/h/i/k/u/y
Connected         : No
Stations Count    : 3
Channel Utilization: 3.9%
Country Code      : US
Description       : 
MAC Group         : 1
==================================================

==================================================
SSID              : Crescenthawks 6
MAC Address       : 08-BF-B8-20-31-88
PHY Type          : 802.11ax
RSSI              : -50
Signal Quality    : 88
Average Signal Quality: 88.1
Frequency         : 6.135
Channel           : 37
Information Size  : 305
Elements Count    : 22
Company           : ASUSTek COMPUTER INC.
Router Model      : 
Router Name       : 
Security          : WPA3-Personal
Cipher            : CCMP
Maximum Speed     : 
Channel Width     : 80 MHz + 80 MHz
Channels Range    : 31 - 47
BSS Type          : Infrastructure
WPS Support       : No
First Detection   : 3/7/2024 11:16:26 AM
Last Detection    : 3/7/2024 11:17:44 AM
Detection Count   : 78
Start Time        : 2/28/2024 11:41:18 PM
Minimum Signal Quality: 88
Maximum Signal Quality: 89
802.11 Standards  : 802.11d/e/h/i
Connected         : No
Stations Count    : 0
Channel Utilization: 0.4%
Country Code      : US
Description       : 
MAC Group         : 1
==================================================

==================================================
SSID              : Gomez
MAC Address       : 04-A2-22-D4-46-E9
PHY Type          : 802.11n/ac/ax
RSSI              : -89
Signal Quality    : 18
Average Signal Quality: 18.0
Frequency         : 5.500
Channel           : 100
Information Size  : 332
Elements Count    : 25
Company           : Arcadyan Corporation
Router Model      : 
Router Name       : 
Security          : WPA2-PSK
Cipher            : CCMP
Maximum Speed     : 1733 Mbps
Channel Width     : 80 MHz
Channels Range    : 98 - 114
BSS Type          : Infrastructure
WPS Support       : Configured
First Detection   : 3/7/2024 11:16:34 AM
Last Detection    : 3/7/2024 11:17:44 AM
Detection Count   : 70
Start Time        : 1/13/2024 2:30:23 PM
Minimum Signal Quality: 18
Maximum Signal Quality: 18
802.11 Standards  : 802.11d/e/h/i/u/y
Connected         : No
Stations Count    : 4
Channel Utilization: 1.2%
Country Code      : US
Description       : 
MAC Group         : 
==================================================

==================================================
SSID              : Hotspot46DA
MAC Address       : 22-AD-56-22-46-DA
PHY Type          : 802.11g/n
RSSI              : -81
Signal Quality    : 35
Average Signal Quality: 35.0
Frequency         : 2.462
Channel           : 11
Information Size  : 181
Elements Count    : 12
Company           : 
Router Model      : 
Router Name       : 
Security          : WPA-PSK + WPA2-PSK
Cipher            : TKIP+CCMP
Maximum Speed     : 72 Mbps
Channel Width     : 20 MHz
Channels Range    : 9 - 13
BSS Type          : Infrastructure
WPS Support       : No
First Detection   : 3/7/2024 11:17:10 AM
Last Detection    : 3/7/2024 11:17:44 AM
Detection Count   : 34
Start Time        : 3/7/2024 11:12:06 AM
Minimum Signal Quality: 35
Maximum Signal Quality: 35
802.11 Standards  : 802.11d/i
Connected         : No
Stations Count    : 
Channel Utilization: 
Country Code      : US
Description       : 
MAC Group         : 
==================================================

==================================================
SSID              : MyAltice 5d4c45_guest
MAC Address       : A6-CF-D2-5D-4D-49
PHY Type          : 802.11g/n
RSSI              : -88
Signal Quality    : 20
Average Signal Quality: 20.0
Frequency         : 2.462
Channel           : 11
Information Size  : 214
Elements Count    : 15
Company           : 
Router Model      : 
Router Name       : 
Security          : WPA2-PSK
Cipher            : CCMP
Maximum Speed     : 216 Mbps
Channel Width     : 20 MHz
Channels Range    : 9 - 13
BSS Type          : Infrastructure
WPS Support       : No
First Detection   : 3/7/2024 11:16:38 AM
Last Detection    : 3/7/2024 11:17:44 AM
Detection Count   : 66
Start Time        : 3/4/2024 5:01:17 PM
Minimum Signal Quality: 20
Maximum Signal Quality: 20
802.11 Standards  : 802.11e/i
Connected         : No
Stations Count    : 0
Channel Utilization: 37.6%
Country Code      : 
Description       : 
MAC Group         : 
==================================================

==================================================
SSID              : optimumwifi
MAC Address       : 76-44-01-52-CC-C6
PHY Type          : 802.11n
RSSI              : -53
Signal Quality    : 86
Average Signal Quality: 83.5
Frequency         : 5.180
Channel           : 36
Information Size  : 118
Elements Count    : 7
Company           : 
Router Model      : 
Router Name       : 
Security          : 
Cipher            : None
Maximum Speed     : 300 Mbps
Channel Width     : 40 MHz
Channels Range    : 34 - 42
BSS Type          : Infrastructure
WPS Support       : No
First Detection   : 3/7/2024 11:16:26 AM
Last Detection    : 3/7/2024 11:17:44 AM
Detection Count   : 78
Start Time        : 10/18/2023 3:09:00 PM
Minimum Signal Quality: 81
Maximum Signal Quality: 86
802.11 Standards  : 
Connected         : No
Stations Count    : 
Channel Utilization: 
Country Code      : 
Description       : 
MAC Group         : 2
==================================================

==================================================
SSID              : Verizon_6BBWXX
MAC Address       : AC-91-9B-02-DB-35
PHY Type          : 802.11g/n
RSSI              : -84
Signal Quality    : 29
Average Signal Quality: 29.0
Frequency         : 2.462
Channel           : 11
Information Size  : 278
Elements Count    : 19
Company           : Wistron Neweb Corporation
Router Model      : 
Router Name       : 
Security          : WPA2-PSK
Cipher            : CCMP
Maximum Speed     : 288 Mbps
Channel Width     : 20 MHz
Channels Range    : 9 - 13
BSS Type          : Infrastructure
WPS Support       : Configured
First Detection   : 3/7/2024 11:17:41 AM
Last Detection    : 3/7/2024 11:17:44 AM
Detection Count   : 4
Start Time        : 11/16/2023 2:46:56 AM
Minimum Signal Quality: 29
Maximum Signal Quality: 29
802.11 Standards  : 802.11d/h/i
Connected         : No
Stations Count    : 
Channel Utilization: 
Country Code      : US
Description       : 
MAC Group         : 
==================================================

==================================================
SSID              : Verizon_GZRV7T
MAC Address       : 3C-BD-C5-CA-C5-45
PHY Type          : 802.11g/n
RSSI              : -78
Signal Quality    : 43
Average Signal Quality: 43.0
Frequency         : 2.462
Channel           : 11
Information Size  : 254
Elements Count    : 22
Company           : Arcadyan Corporation
Router Model      : 
Router Name       : 
Security          : WPA2-PSK
Cipher            : CCMP
Maximum Speed     : 600 Mbps
Channel Width     : 40 MHz
Channels Range    : 7 - 15
BSS Type          : Infrastructure
WPS Support       : Configured
First Detection   : 3/7/2024 11:17:30 AM
Last Detection    : 3/7/2024 11:17:44 AM
Detection Count   : 14
Start Time        : 3/4/2024 4:57:16 PM
Minimum Signal Quality: 43
Maximum Signal Quality: 43
802.11 Standards  : 802.11d/e/h/i/u/y
Connected         : No
Stations Count    : 0
Channel Utilization: 42.7%
Country Code      : US
Description       : 
MAC Group         : 
==================================================

[hitbyambulance]

what functionality on the TV do you use to display video wirelessly? it's not 'screen mirror' i take it.

what is the TV make/model?

[Punisher]

what functionality on the TV do you use to display video wirelessly? it's not 'screen mirror' i take it.

what is the TV make/model?

It's an LG. I can't see where to see the model.
I have no idea how it wirks. I randomly cane across the wireless display option in windows hit search and there it was. Surprised the heck out of me.

[hitbyambulance]

i can see now it's called Wi-Fi Display / Miracast™ - need to read up on this:

https://www.wi-fi.org/discover-wi-fi/miracast

What is the difference between Miracast and Wi-Fi Display?

Miracast is the brand for the certification program operated by Wi-Fi Alliance. Devices that pass this certification testing can be referred to as “Wi-Fi CERTIFIED Miracast™ devices” or “Miracast® devices”. Miracast certification is based on the Wi-Fi Alliance Miracast Specification. This is the underlying specification developed by Wi-Fi Alliance members, and is copyrighted and owned by Wi-Fi Alliance. Wi-Fi Display is the original name for the Miracast technology.

https://superuser.com/questions/1753343 ... splay-work

"direct wireless connection between the 2 devices" - if this is the case, the router plays no part whatsoever:

How does Windows wireless display work?

It use Miracast which is direct wireless connection between the 2 devices and does not require a working internet connection:

Miracast is based on the peer-to-peer Wi-Fi Direct standard. It allows sending up to 1080p HD video (H.264 codec) and 5.1 surround sound (AAC and AC3 are optional codecs, mandated codec is linear pulse-code modulation – 16 bits 48 kHz 2 channels). The connection is created via WPS and therefore is secured with WPA2. IPv4 is used on the Internet layer. On the transport layer, TCP or UDP are used. On the application layer, the stream is initiated and controlled via RTSP, RTP for the data transfer.

initial reading indicates one problem could be 'crummy WiFi Direct drivers for wireless network cards in Windows' and a dedicated WiFi dongle that specifically supports Miracast might solve the issue... i'll leave it here for now:

https://www.tenforums.com/network-shari ... -help.html

[Punisher]

Hmmm. I don't recall if i updated the wireless drivers when i got it. Ill have to check.

[Anonymous Bosch]

Hmmm. I don't recall if i updated the wireless drivers when i got it. Ill have to check.

In that regard, instead of relying on Windows to manage your drivers, I'd highly recommend using the free and open source Snappy Driver Installer Origin tool to handle driver installation in Windows, as explained below:

[Punisher]

The problem came back. Was working fine for a few days and now it's lagging again. The program above says everything is up to date but
I checked in Windows update too and via the Lenovo update software and download page.

Does the scan info I posted above help in any way?

[hitbyambulance]

Does the scan info I posted above help in any way?

the wifi connection is a direct one between your TV and your computer, using Miracast - the wifi router does not play a role at all.

[Punisher]

Does the scan info I posted above help in any way?

the wifi connection is a direct one between your TV and your computer, using Miracast - the wifi router does not play a role at all.

Ok. Any other ideas what could be going on?
It's pretty random now.

[hitbyambulance]

Does the scan info I posted above help in any way?

the wifi connection is a direct one between your TV and your computer, using Miracast - the wifi router does not play a role at all.

Ok. Any other ideas what could be going on?
It's pretty random now.

it's _probably_ centered on the new machine. i am not knowledgeable enough about Miracast to check what could be changed on the PC's side ... my current advice is to get a wi-fi dongle that's confirmed to work with Miracast. if that fixes the issue, then it is something to do with your network card (or some other PC component. just one example: https://www.amazon.com/TIMBOOTECH-Wirel ... 0CL4FL9G3/

[Punisher]

Hmm. Bit pricey but something to think about. Dont think it's worth that much to me though.

[Blackhawk]

Could it be anything external to any of the actual devices? Another device turned on, a neighbor's microwave, a piece of furniture getting moved around and interfering (most won't, some will), etc? How far away are the two from each other, and what's in between them?

[Punisher]

Could it be anything external to any of the actual devices? Another device turned on, a neighbor's microwave, a piece of furniture getting moved around and interfering (most won't, some will), etc? How far away are the two from each other, and what's in between them?

About 10 feet apart. Clear line of sight.
Worked again a few hours ago enough to try out helldivers 2.
My neighbors don't tell me when they are using thier microwaves. Might need to install spycams to be sure.

[Blackhawk]

My neighbors don't tell me when they are using thier microwaves. Might need to install spycams to be sure.

Nor do mine, but I can tell when she's using it because of what it does to signals here in my apartment.

[Punisher]

My neighbors don't tell me when they are using thier microwaves. Might need to install spycams to be sure.

Nor do mine, but I can tell when she's using it because of what it does to signals here in my apartment.

Geez. How close are your neighbors? I have a tenant upstairs but the next door neighbors have at least a driveway in between on each side.

[Blackhawk]

Downstairs. But the point wasn't about microwaves, it was that sometimes outside factors can cause problems, too.

[Kasey Chang]

I would start watching your task manager and look among GPU, CPU, and Network utilization, and which one dips badly when you're having problems.

From what I can see, your LG TV's Miracast is a Wifi Direct (i.e. PC talks directly to the card, not through a network), so your PC's Wifi is basically splitting its attention between the TV and the network. I don't know how the killer card optimizes performance, but it may get a bit wonky depending on the order you do things (connect game first vs connect TV first, maybe?) and I don't know what Wifi bands are your TV using either. LG's website doesn't say, at least from a quick glance.