I'm using the patch that released on May 2nd, no special tinkering. Raytracing and FSR2 even work. Sometimes crashes on startup but other than that it's rather solid on my machine.

It's important to restart the game if you change any graphical settings. Also, you will want to wait a little bit after loading in to asses the changes you made, since while it streams in assets after booting, you will see lower quality textures, but they clear up soon and that's the case on Windows too.

The whole experience on Linux for me appears to be about the exact same or better than what Windows people are reporting. All the problems present are problems with the game itself, and those appear to be much better already than at launch.