

There is not much to say, the game runs without any problems.
works out of the box

Completely flawless OOTB
The workarounds mentioned in older reports here are no longer needed, an appropriate workaround was merged into Proton itself and is included with Proton 9.0.

Worked out of the box
Runs perfectly
Works perfectly out of the box

Works perfectly out of the box (proton experimental).
Tried everything listed in all comments. 2hrs of debugging attempts. Steam reports game as "running", never opens any window though.
Very occasionally will lock up, but the game saves often.
PROTON_USE_WINED3D=1 %command%
Deleted /Pentiment_Data/Plugins/x86_64/SpeechSynthesisWrapper.dll
Wouldn't Run
Tried every method mentioned on this page, and several different versions of Proton. Game would either hang on the Steam loading window or crash with a Unity window on the initial loading screen.
Played through the entire game without any issues..
Delete Pentiment/Pentiment_Data/Plugins/x86_64/SpeechSynthesisWrapper.dll
Game will crash on startup if you do not delete Pentiment/Pentiment_Data/Plugins/x86_64/SpeechSynthesisWrapper.dll
Crash at startup. Fixed by removing the file "/Pentiment_Data/Plugins/x86_64/SpeechSynthesisWrapper.dll".
removed SpeechSynthesisWrapper.dll ; but still would not play until I used GE7-49 Proton
had to use ProtonGE7-49; Steam-packaged Proton would not work
Removed SpeechSynthesisWrapper.dll
Browse Local Files; rename or delete Pentiment_Data/Plugins/x86_64/SpeechSynthesisWrapper.dll
Game runs excellent and as expected without any adjustments
Changing the file name as others have mentioned was required.
Minor stuttering when loading and saving
This game plays perfectly on Linux, as long as you take the initial step of removing SpeechSynthesisWrapper.dll from the plugin folder.
As others noted, the game will not launch unless SpeechSynthesisWrapper.dll
is deleted from Pentiment_Data\Plugins\x86_64
. Note: this will disable the speech synthesis accessibility option.
When switching scenes (enter/exit a house, engage dialogue etc.) both the top and the bottom of the screen show a thin artifacted line for a brief moment. It's very minor but noticable. Confirmed that this does not happen on WIndows.
A fantastic game in its own right that plays very well on Linux without major issues.
As mentioned from other users, you have to delete SpeechSynthesisWrapper.dll in Pentiment_Data/Plugins/ because else it will crash shorty after hitting the play button.
Now everything seems to work flawlessly.
This game works flawlessly so far. As mentioned by the others, you have to delete SpeechSynthesisWrapper.dll in Pentiment_Data/Plugins/x86_64 though, else the game will crash shortly after hitting the play button.

Crashes at in-game loading screen just after launch
The game starts with a loading screen with a windmill on bottom left. Within about a second or two it crashes with no error message.
Works great after you remove SpeechSynthesisWrapper.dll in the Pentiment_Data/Plugins/x86_64 directory.
Removed SpeechSynthesisWrapper.dll as mentioned in other reviews.
Seems to start up but instantly crashes if the DLL isn't removed.
__NV_PRIME_RENDER_OFFLOAD=1 __VK_LAYER_NV_optimus=NVIDIA_only __GLX_VENDOR_LIBRARY_NAME=nvidia
Like other reports mentioned, I simply had to rename SpeechSynthesisWrapper.dll in the game directory. Afterwards, the game worked flawlessly at 60 fps with no observable performance or stability issues.

Had to get rid of SpeechSynthesisWrapper.dll in /Pentiment_Data/Plugins/ otherwise the game wouldn't launch
Had to get rid of a file for the game to start " SpeechSynthesisWrapper.dll "

Game would not launch without renaming SpeechSynthesisWrapper.dll.
Without tinkering the game wouyld launch. Right-click on the game > Manage > Browse Local Files > Pentiment_Data > Plugins > x86_64 ==> rename 'SpeechSynthesisWrapper.dll'. Launch and enjoy the game.
Like someone said above, game didn't start so I renamed SpeechSynthesisWrapper.dll in the game folder/Pentiment data/Plugins. Once that is done, works flawlessly.
Game would not launch without renaming SpeechSynthesisWrapper.dll
in <install_folder>/Pentiment_Data/Plugins/