Many many thanks @BastiArts !!!
I am trying Unraid on an MSI B450 Tomahawk w a Ryzen 3600, and GPU passthrough of an GTX 1080Ti Founders Ed. was a nightmate, so much that I was on my way to Proxmox. I found your tip just as a last attempt.
And I have literraly tried any other solution and video for days... One at a time, combined...
In Proxmox it took me like 4-5 mins to Passthrough a Win10 system complete w NVME & GPU. Yet Unraid has other goodies...
again Many many Thanks!!!, may you be blessed for eternity
I come to add that XML editing has not been necessary for me since the fix. I checked the XML file and I don't use the extra code. Then again after passing through another audio card (extra) all worked nice and smoothly