Absolute opposite experience for me. The native versions of Half-Life, Cities: Skylines and a bunch of other games refuse to start up at all for me for a few years now. Meanwhile I've been on the bleeding edge of Proton and I can count the number of breakages with my sizeable collection of working Windows games within the last couple of years on one hand. It's been a fantastic experience for me with Proton.
Not sure if I'm honest. Starting up steam through the terminal and launching the game doesn't give me anything indicating the reason in the logs, which is weird. I'm using Arch and tried both steam and steam-runtime already.
