Hey, we were able to narrow it down. Here is a breakdown of what we found.
- Windows 11 24h2 was indeed a part of the problem. Microsoft released an update a few days ago: KB5058499 (OS Build 26100.4202). “[Graphics kernel] Fixed: An issue where some game titles become unresponsive after upgrading to 24H2.”
- Nvidia improved some driver issues, a hotfix shouldbe released soon.
- We found that disabling “Hardware-accelerated GPU scheduling” helps.
- We were able to mitigate the problem by setting process affinity on the game startup so that the Core0 is reserved for background tasks. We introduced `FWindowsPlatformProcess::SetProcessAffinityMask`
I hope it helps others!