Great post! Big question though I'll ask, without having tested your method obviously-- how agout EA's Origin? Origin, is a finicky thing. EA from my experience, went out of its way to prevent simlink drives and NAS directories for game storage. Are you able to test this method with Origin, and if you have already-- does it work?
Bump. I have this problem now too, after my previous Windows 10 VM decided to self-destruct randomly one day. Made a new one, set it up once with VNC, then shut it down to edit it via a web browser to include a GPU and sound card pass through. Suffice it to say, editing it, it shits the bed. Any browser, refreshing, etc.
Bueller? Any words on this yet?
@Micaiah12 did you have any post-install/fix issues? Did you ever try any different settings? I'm having issues with my RX 480 right now with 6.6.6 that sound/look a whole lot like what you had. I'd be curious to compare notes.