“The video card you’re passing through is on the Proxmox server, yes?”
Yes, although my gaming PC itself is the Proxmox Server. So I plug the monitor directly into it. I also have some thin clients that can play the game remotely from the host. A Steamlink and a Steamdeck, and as long as they’re on the same wifi network it works great!
The benefit for me is I can move between different operating systems like dual booting, but it’s way easier to pivot to a whole new OS.
Techno Tim has a YouTube video that I watched a few years ago that sparked the idea. Google Techno Tim Remote Gaming or follow this link if you’d like to watch more.
Here is an alternative Piped link(s): https://piped.video/fgx3NMk6F54
Piped is a privacy-respecting open-source alternative frontend to YouTube.
I’m open-source, check me out at GitHub.