Fonctionne parfaitement

-dx11
Water (on surface levels) is not rendered at all. It's completely white with shaders but no textures and alpha.
The command "-dx11" is recommended for better video card wattage/performances. The "DXVK_FILTER_DEVICE_NAME" environment variable doesn't make any difference at all. Tested on Epic version via Heroic Launcher.

It's been a while seems I played but I can't remember huge problems. Sometimes it dips but not significantly. Mid/high settings and 40 FPS cap

Игра пройдена, никаких проблем не было.

Worked nicely, pretty much without issues
A few small stutters, but nothing gamebreaking. Not really annoying.
Worked out of the box for me from start to finish.
Ran perfect, including videos

Ran pretty well but some framerate issues and stutter, the text was difficult to read in the journal.
Ran pretty choppy

Sometimes it loads the environment slowly
Not sure, maybe just my hardware is old, but I'm suspicious.
DXVK_FRAME_RATE=30 gamemoderun %command%
in my case i had to limit the frame rate to avoid crashes due to probably overheating
In my case it doesn't matters which version of proton i used. More than 30 FPS overheats my system and it crashes. So i limited the FPS with: DXVK_FRAME_RATE=30

Great game to discover, figure out riddles and solving puzzles in a story driven, beautiful environment. Mystery, love, discovery, Pacific.
there is an option in the game to make hand written text more readable and that helped a lot.
a few hiccups here and there, nothing major or distracting, when frame rate drops to aroun 20fps, sometimes there's a glitch
Installed the Epic Game Launcher on the Steam Deck, installed and started the game from that, no issues, no hassle, game is running fine. Typically between 25-40+fps, no issues so far.

Proton Experimental ile bile çalışmıyor.
Kurulumdan sonra ne standart ayarlarla ne de proton experimental seçeneği ile çalışmadı.

Huge FPS drop on some levels
Some videos are supposed to play when reading the husband letters. They didn't show until I changed proton version.
Changed to Proton Experimental due to constant crashing.
The first chapter of the game was perfect on the default proton 7-06 but starting chapter 2 the game would crash at reproducible points.

Played the EGS version with Heroic.
I first used vanilla Proton Experimental, but about an hour into the game there is a (quicktime?) video which made the game crash. After switching to Proton-GE, there were no problems.

Runs fine out of the box
Some stuttering when loading new areas, and all through chapter 6
The average frame rate is around 30-35.
In some areas you'll get 40-55 fps and a few cases it will drop to 20-25. High and Medium settings are about the same. If you drop the settings to Low, then you'll get 10-20 fps more, but the quality drop is noticeable. It's totally playable on the deck because you shouldn't need a high frame rate to enjoy it.
Text is readable but a little small. The handwritten font can be changed to a normal one in the options menu though, making it a bit better.
The controls are pretty slow, but that's fortunately not an issue in this game, since there's no quick action involved.

I've completed the game without issues. Excellent performance.
Minor stuttering in some areas due to shader compiling (as most Unreal Engine games)
Runs without any issues.
Works great out of the box
Camera sensitivity feels a little low even maxed out, but the game runs fine and doesn't feel bad to play
Unoptimized game, had to run at 40 Hz, even then game can drop lower to 30s, even 20s on lowest settings.
Lowest settings + 40FPS cap
Drops to 30s, even 20s
Finished game with no real issues
Mostly good performance, 70-100 FPS on 1440p but drops down to 20 in some areas

Capped framerate to 30 fps
Stutters and framedrops when loading new areas.
Generally works very well but GPU usage is high and it really affects the Steam Deck's battery even with a 30 fps cap at Medium settings. Some framedrops and stutter when loaded new areas, could be Unreal Engine shader cache. Playable, but not as silky as it could be.
Works fine except for the high GPU load-
My GPU was constantly at 99% even with reduced graphics settings.
Initially in-game videos were missing (control screen), but after switching to Proton-GE, everything was fine. Even FPS seemed to be much better.
I have a Logitech F710 gamepad that isn't detected by the game.
Audio won't work if you use Proton 5.0. Be sure to use the 5.13.x
In-game videos did not play (missing texture?) But these are fairly rare and not important for gameplay.
Finished the game after 8+ hours.
There was a place where the game crashed once. After reloading the save I was able to resume playing without problems.
The usual slowdowns due to shaders being compiled when a level is accessed the first time.
Rare FPS drops, beside that it runs like native.

Works fine, with small limitations mentioned below.
When a letter of the protagonist's husband is read, a video should be shown ingame, but only audio is played. They are not critical for the game story or progress, but reduce inversion. One can find the movies at 'COTS/Content/Movies/HarryXX.mp4' and watch them with a video player.
Out of the box my X-Box-360 controller was not detected. I needed to disable 'Steam input' inside Steam's game properties.
I am playing with 'Epic' graphical settings at 1080p and v-sync on. Performance is limited by the 60hz screen, with rare dips into the 50s, where the GPU seems to be the limiting factor.
I am currently in the third of six chapters.
Game plays well enough just missing video cut scenes
slight delays when loading a new area
Movie cut scenes within game don't play

Works perfectly (with Proton 5.13-4, as was mentionned), except for my Xbox one pad which isn't detected.
Xbox One gamepad
Slight tearing while playing on ultra graphics