I've been debating making the switch for a long time, but after spending like a week researching Proton, Lutris etc. on Linux, I decided to try it out and nuked my entire Windows 11 drive. :)
So far, every game I threw at it works perfectly fine, including Elden Ring & Cyberpunk.
I had to spend a little time troubleshooting some small issues but it's part of the fun!
Specs are in the neofetch, my compositor / WM is Wayfire (Wayland) :)
Look into GPU passthrough. It can be tricky but you can reserve a physical GPU for direct control by a virtualized operating system. If you have two GPUs (or an APU and GPU) you can run that virtual machine as a literal window inside your host operating system. LookingGlass does this with minimal latency by using a shared memory space.
I set up a system to do this but haven't used it much because linux gaming just works and I haven't had to return to using windows-exclusive productivity software. I could be mis-interpreting your use-case entirely, but it might illustrate how much you can accomplish with a virtual machine.