Gaming is pretty close now thanks to the Steam Deck and Valve’s work on Proton. It depends on what games you play since some anticheat requires Windows or console but I mostly play single player games and have a console if I want to play something competitive.
If you have a specific, competitive game you play, you might want to stick with Windows (or console) if support isn’t there. AMD GPUs are also better for Linux (because they open source their drivers) but Nvidia is getting better since a lot of machine learning customers use Linux. They have a huge financial incentive now that it’s data center customers complaining instead of random Linux users.