I've decided to put it here because just spent several hours trying to figure out AMD Radeon 6800XT passthrough to my Win 10 VM.
Previously I've only worked with Nvidia gpus and experienced zero issues with them. Radeon a bit different story.
I'm running unraid on Ryzen 5950X Asus Crosshair VIII Hero. The GPU is Gigabyte Radeon 6800XT (ref). So not all tips may be relevant to your hardware/software.
So the hints are:
BIOS: disable CSM compatibility mode and l
Haha no worries, as far as it looks, the card is resetting correctly. Did you notice if one core get stuck at 100% when this happens? Easiest way to see this is probably from Unraid dash, but you can see it via Task Manager or by running top as well. That'd be a sure sign the vBIOS you're using is causing problems, and you'd want to dump it yourself.
I hate to be the link guy but I'm a little stumped, but I think you're on the right track already with the changes you made to your XML. I ca