Completely depends on the accessories, and an nvidia GPU is unlikely to have a major impact, I’ve used one for VR before. What are slimes?

Pretty sure they were saying the experience of playing games on Linux is fantastic, not referring to GamingOnLinux. You seem a little obsessed.

Tends to depend on the headset you own, some work perfectly. Also, Valve is very likely releasing a headset based on SteamOS, which should help.