Hi,
i have the same issue. I lost my GPU passthrough once i update to 6.10.2.
OS: Windows 11
CPU: Ryzen 3950X
GPU: NVS 510, but it also happens with a GT 710
I know that my GPU is rather old, but this Windows VM is mainly my Homeoffice machine.
I also tried following the guide from Celsius, without any luck. So i rolled back to 6.9.2.