I wouldn’t go with Opensuse or Fedora for gaming.
Why? I use openSUSE Tumbleweed for gaming and it’s been rock solid. Seriously, I’ve never really had any issues. It has its quirks, but they are easily “fixed” by adding Packman and the Nvidia repos… and running an update.
I’ve tried Ubuntu multiple times and it was always a shitshow disaster. Mint was OK-ish, but had Ubuntu-related silliness.
I’ve been using Nvidia with Linux for a VERY long time. Currently I have computers running:
They are all working fine with openSUSE Tumbleweed. I install openSUSE, add the Nvidia community repo (a couple of clicks), run updates once, and reboot. Everything just works after that. I can count maybe 3 times in the past 6 years that there was any issue at all.
Now Ubuntu and derivative… I’ve had a LOT of issues and weirdness… drivers failing, doing weird things etc.
openSUSE has YaST which covers almost all complex settings… it’s not perfect, but it tries