>>330437469
GPU passthrough is required for playing VR(or just games or anything gpu-related). Since you're running a virtual machine it's basically it's own computer(it can even BSOD). For example I split half my CPU cores and RAM when I boot up my windows 10 vm(begrudgingly). GPU passthrough on a non-commercial scale requires you to not be able to use the GPU on host. So you'll have to run 2 GPU or use integrated graphics of your CPU. Besides running two GPU it's a super simple setup.

As for key use... Just use the method(s) provided by /g/'s friendly windows thread - https://rentry.co/windows_for_retards#activation