The article mentions that there are performance penalties to running hypervisor cracks in a VM with GPU passthrough, but if you're dual-booting barebones Arch (just enough to get a VM running), is there really a significant performance loss?

And once you have that set up on a separate boot, then it should be safe and fairly efficient to set up a bunch of these hypervisor cracks, I'd expect.

I don't care enough or have time to tinker with this myself, but that sounds like a more fun project than actually playing one of these AAA games, lol.