FWIW, I’ve got an i7-8700k with an RTX 3080. I initially had two major issues when I replaced Windows with Bazzite:
Steam doesn’t do great with libraries on NTFS partitions. Supposedly there are workarounds, but I couldn’t get them to work for me. I had to reformat a couple drives as ext4 (and do a bunch of file management in the process) before things would play nice.
I had my CPU overclocked to 4.8 GHz in Windows. BG3 kept crashing on me on Bazzite. Finally occurred to me to drop the overclock and I’ve played 40+ hours since, solid as a rock. Performance is comparable to Windows with OC. GPU temps are consistently better than Windows. Only thing I’m missing is HDR.
Bonus: GreenWithEnvy (for GPU fan curve) won’t run in a Wayland session yet, apparently, so I’ve been running under X11 instead.
Hope this helps. YMMV. Happy gaming, whatever OS you use!