In Proxmox they have VirGL-GPU and Virtio-GPU. They allow VMs to pass work to the GPU without being dedicated to one VM. I don’t think gaming was the intended use case and don’t know what kind of performance you would get. My uninformed guess is that it would not be great.
It was kinda bad.
It’s a lot better now, but getting to military web sites, especially OWA, has always been a pain in the ass on personal computers. I tried this out trying to avoid using my main computer for work stuff and it just didn’t work that well.
I don’t think anyone was really using it that much which is probably why it isn’t maintained.