Works great!
I noticed some framedrops on the first match, i guess it has to do with the shaders loading. After the first minutes it goes butter smooth.
Can recommend, everything works.
There are some random crashes. When using a torch, when exiting a dungeon, and some others i couldn't point out.
The most problem of online right now are the random crashes. Some crashes like putting the torch out, will make you unable to reconect the same match.
So i managed to play with a friend multiple matches during this playtest. However, the random crashes (at least once per match in my shortexperience), can be very anoying.
Otherwise, the grame works smooth. Hope the devs give more Linux support for proton.
gamemoderun %command%
Game seems to crash when I extract back to lobby through exit stone.
Some lag, but pretty sure that was from the server side, not from running through proton.