Help! Has Windows update killed my Iris Xe GPU?

[Lastmarine]

Hi, 

I have a custom build PC Specilaist laptop specs:

Processor 12th Gen Intel(R) Core(TM) i7-1260P (2.10 GHz)
Installed RAM 64.0 GB (63.7 GB usable)
Device ID 3DEC315F-7F7A-41D2-B045-4BD4DF1C4709
Product ID 00342-20968-97576-AAOEM
System type 64-bit operating system, x64-based processor

Including the Intel Iris Xe Graphics card.

Before the latest Windows 11 update, I was live streaming no problem with multiple camera inputs at 4mbps, 1920x1080 60fps. I never experienced any issues with over 130 streams each around 90mins. After this update, my system can now not handle streaming even one camera at the lowest res. I Can barely stream audio only without bitrate collapse. 

-I have tried to rolllback windows but the option isnt there.

- I have deleted and re-installed the correct GPU driver from Intel Driver and Support Assistant and it currently says up to date. 

-I've been through the Power settings to ensure windows hasn't changed anything there.

-I've been through all the streaming and encoder settings i can within my streaming software to try and resolve without getting anywhere. 

AI Assistance is convinced windows has a corrupted something or broken the Intel QuickLink to the GPU? We have tried repairs via both restorehealth DISM and through the official Windows ISO. Unfornately both failed to repair which AI believes is more evidence for the fault being at the OS level. 

The only option left AI is pointing too is a reinstall of windows. I would lose all my installed programs and introduces the potential headache of issues later on. I will if I have too, but I wanted to check here first to ask if you have heard of this issue before with the Iris Xe card before? Is this a known fault?

AI is convinced that via Task Manager/Performance/GPU I SHOULD have a 'Video Encode' graph option visible. Currently all I have is 3D, Copy, Video Decode, Video Processing, Video Decode1, Engine, 1,2,3,4,Overlay,5,6. It seems to think this is the biggest red herring for why the card isn't working correctly. I am not so sure but I wanted to ask here at Intel where people will know if such a graph for 'Video Encode' should be visable normally with the Iris Xe?

Many Thanks for any help

Chris 

[Lastmarine]

Well just incase anyone ever does come across this thread with a simialr issue to me, 

I can confirm that reinstalling windows did solve the issue. Luckily I discovered I could still repair without a full reinistall via Restore, and was able to do this without affecting installed programs and files. Ergo it was pretty straight forward. Once complete, my GPU processor graph options in Task Manager ddid change. I never got 'Video Encode' but I did gain 'Video Processor 1' as well as 'Compute', 'Engine' and 'GPI Render'. My Life streaming instantly returned to more than capable. So all ended well/ Screw you Microsoft for your chaos updates.