What about the user side? If I want to pick an instance that uses a relay, is there a way to know?

Could you expand on the relay thing? How does one know if a server uses a relay?

According to this post Mammoth.

https://twit.social/@mbwelch/110268426561442301

I haven’t tried it though.

That is a nice UI but still has the same problems as the official app. It doesn’t show all the interactions.

Did you change the video settings to full screen? I don’t have experience with my steam deck and this game, but on my main arch setup I had to change to borderless full screen again. Game wouldn’t load otherwise. You either have to change or delete the config. Check ProtonDB for the correct config path.