I use Ubuntu and Nvidia 3080 and the only issue I have had was when Steam updated their Big Picture Mode. I was using Wayland and it broke with the new Big Picture Mode. I had to switch back to x11 and it works well with that. I do hope Nvidia and Steam fix the Wayland issue. I'd rather use Wayland.
I have been using my Linux Gaming PC for for a couple of years now. I jumped ship with the ad riddled Windows 11. And I have been very happy with Steam/Proton gaming.