I believe that it’s specified in the architectural reference framework that it has to re-validate every session, to ensure that the token hasn’t been revoked. I’d be happy to be corrected, though!

I haven’t had any issues with my nvidia GPU. I did some distro-hopping and didn’t have any nvidia issues in any of the distros I tried.

If you want everything to work out of the box, I would recommend Bazzite. Pop! OS had me using the AMD image and fetching the nvidia driver manually (the nvidia image just didn’t work for me). After that, everything worked brilliantly.

Same experience, it has worked flawlessly for me too!