Yeah ProtonDB is great but it doesn't always have a fix.

For example, Powerwash Simulator is Steam Deck Verified and has a Platinum rating and most people are like "runs great out of the box, no problems".

However, when I tried it, the screen would blank every second until I managed to put the game into windowed mode, and then the lower portion of it was concealed behind the app panel.

This was on a fresh Linux Mint 22 install with the latest proprietary Nvidia drivers.

Also, you can't install most games until you enable "Steam Play on all titles" which I had to figure out myself.