I think I get slightly better performance on Bazzite than on mint. Mint e.g. still has the 535 Nvidia drivers as recommended (we’re at 550 now). On Bazzite you’ll probably have to enable x11 until the new update with explicit sync drops mid May. (At least I had a ton of flickering on Wayland with my rtx 3060)
That sounds awful. Have you tried disabling energy saving options (like automatic screenlock/sleep)?