Like, I'm sure they fixed the bugs they were looking at, but virtualization isn't magical security juice you can sprinkle over stuff. In fact it increases your attack surface in a lot of ways.
This seems to claims vGPU works with NVidia Grid.
The real issue you're facing is with over-provision them?
Any thoughts about qubes OS?
That said, unless I'm missing something the claim of solving bug issues was kind of BS. I looked through more than half of the chrome bugs and most of them were actual bugs in chrome or angle that had absolutely nothing GPU specific about them.
In other words they could (and do) happen with all code as in
const void* p = malloc(10);
memset(p, 0, 11); // oops
Still, they claim to be getting great perf and less code so all of that is a win.