

Disable muting audio when game not focused to avoid crashing from alt-tabbing
Nothing is wrong with the audio, per-se, but the "Mute when Escaped" (bad translation of muting audio when game window loses focuses) seems to be the source of the crashing when alt-tabbing. Disabling this setting stops the game from crashing (afaict)
The game will crash if you alt-tab, or otherwise "unfocus" the window

PROTON_NO_ESYNC=1 PROTON_USE_D9VK=1 %command%
Generally everything works out of the box. The main problem I encountered was that everytime I alt+tabbed to some other window, the game would freeze. When I added "PROTON_NO_ESYNC=1 PROTON_USE_D9VK=1 %command%", the game no longer freezes. Playing on maximum settings no problem.
Perfect experience! Everything just works, game is fun too!

Full playthrough including both story DLC with no issues
I had a single crash in > 200 hours, and I'm not so sure it was due to Proton rather than a game bug. Even that crash was only a minor inconvenience since battle state is saved every turn. You can pick up right where you left off in the middle of a battle if you exit the game (whether voluntarily or through a crash).

gamemoderun %command%
Everything works without problems after about 3h playtime.

DXVK_ASYNC=1 %command%
Changed a few keybindings like using the left trackpad for zoom (T and G). It works best as K&M; joystick controls are cumbersome.
Once it hung while trying to quit the game.
If you use the regular Steam for this game, the game is stuttery all the time, in a quite unpleasant way that interferes with gameplay. For the stutter to be completely gone, you need to uninstall the game (so that it cleans the shader cache and pipelines), install GE-Proton (I used 7-38) and enable dxvk-async on the launch options, then install and play the game.
Very slightly grainy
Little bit of a delay in some inputs. Default controller settings doesn't seem to properly recognize the right track pad and makes its input scheme feel strange.
Seems like a fun game. My steam deck has skewed my hours - I've actually only played it for a couple but sleep mode counted towards the total
Inputs do not register at times, game has partial controller support so it's clunky
Slowdowns to below 30fps during mission sequences
Some button prompts take time to register or takes multiple presses
Will sometimes hang on certain menus
With the latest version of Proton the game works again for me.

I used PROTON_NO_ESYNC as startup option
If the game doesn't start (see my last report), you have to move it to your main partition to fix that

Game doesn't start
Proton versions tried: Experimental, 6.10-GE-1, 6.3-8

PROTON_NO_ESYNC stops the game from crashing after about five minutes.
Would crash about 5 minutes in without disabling esync due to exhausting the number of file descriptors for eventfd synchronization (and my system has a pretty reasonable max limit of those). Runs perfectly fine otherwise.
Works out of the box, slow loading times (same problem for Windows users reported)
Slow loading times and low frame rate for a given hardware setup (same problem as Windows users reported)
Game crashed quite often before I applied the commands above.

Months ago I played the game for over 20 hours with no problem but now something is changed (it is updated weekly) and it is unplayable.
it crashes every few minutes
I tried also Proton 5.0-10 (the current default), 4.11-13 and 5.13.3 but nothing changed. However I wasn't able to try the old 5.0-9

It works out of the box
The game set the graphic preference to minimal settings but later I maxed them and it works just fine.

Proton-5.4-GE-3 GloriousEggroll
Game is barely playable at absolute lowest graphics settings, wineD3D and esync settings don't help at all.
Crashed once in the tutorial.
Works out of the box with 4.11-11. Over 8 hours of play with no problems.


Needed to install steamVR even though I don't use steamVR.


I've tried each available version of Proton and I've tried disabling esync and d3d11. In every case, it crashes without visibly opening. On first startup it does install needed elements. Either I'm doing something wrong, or it doesn't want to work. On Proton 3.7-8, it will sit there saying it's running for a bit before it stops.