

Can't progress after certain point, unless you do some shennanigans
Missing images on tutorial screens
Sometimes mouse jumped unexpectedly, maybe during background loading
Game always locks up after finding the herbalist set (~2 hours in). Can’t progress any further. I got trough it by loading the game on windows, progressed that part and continued with no other problems

5.9-GE-8-ST GloriousEggroll
The game freezes every time after the herbalist set creation. I have tried to skip tutorial, install custom Proton mentioned here. Nothing helps.

The game runs smoothly. There is only one relatively serious and solvable issue that the game freezes when the herbalist set first appears.
Unable to set volume. Some effects are too loud.
The tutorial videos are not shown when using Proton without Media foundation support. The Proton with media foundation could solve the issue. For me it makes the videos visible, but also it caused that the game often freezes during tutorials.
The game freezes while showing tutorial and when the herbalist set first apear in the game. This is game breaking bug. Possible solutions to freeze of the game: Skip the tutorial for the herbalist set just at the begging. Another solution would be use Proton with Media Foundation support (and maybe also skipping the tutorial). The remaining part of the game then runs withnout any problems.

Proton-5.8-GE-2-MF GloriousEggroll
MediaFoundation is part of that custom Proton version I was using. You might getting the same results by installing it manually instead of using a custom Proton version with it (a versions that ends with MF) from GloriousEggroll.
Every once in a while, not too often, there are these brief lag spikes. These spikes freeze the game for under a second while the mouse input is making a big jump into the direction it was moving this moment (if it was actually moving). But I'm pretty sure I had the same problem under Windows7 too and this is not affecting game play too badly (because it is not a Shooter or Action game). A faster CPU might likely fix that.
Just because he cannot continue the game
Game always locks up after finding the herbalist set (~2 hours in). Can't progress any further. Also... The videos in the tutorial cannot be seen.
Can't progress after certain point.
Missing images on tutorial screens.
Sometimes mouse jumped unexpectedly, maybe during background loading.
Game always locks up after finding the herbalist set (~2 hours in). Can't progress any further.