BSOD in Windows 11 with GPU passthorugh & nested virtualisation

I had the same issue. Tracked it down to MSI Afterburner being installed being the cause. On uninstall and reboot the issue went away. Even with overclockes off/reverted to zero the issue remained. While this was occuring, rebooting the win11 vm it would BSOD : VIDEO_DXGKRNL_FATAL_ERROR. Removing MSI Afterburner fixed this too.

Even if Afterburner was not your issue, uninstall relevant gpu software on vm, hwinfo, hwmonitor etc and see if it goes away (try drivers last?). Thats what I did. I should add that rivatuner seemed to have no effect, only afterburner. On both 4.6.5 and 4.6.6
 
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