Funnily enough, I’ve seen opinions that Windows has awful HDR handling and Plasma is much better, but I don’t have a proper HDR display to check. I’ve also had some success with VR, though I haven’t played much on Linux. That said, support from software for those things for Linux is still widely lacking, so it’s not much consolation.
Getting a bit ahead of yourself, we’re only on 3070 so far!