


tried different proton version / GPUs
Works fine in single-player, unplayable in multiplayer
Works fine in single-player, unplayable in multiplayer
Works fine in single-player, unplayable in multiplayer. The game will struggle between 15-45 fps as soon as you enter online mode. Even worse - for some reason that behavior will affect others too (even if they are on native windows)
Probably will not be fixed, last patch from 2020
taskset -c 6 %command%
Lag is fixed with launch option
If Mercenary Kings, Monster Hunter, Castlevania, and Mega Man Zero all got together and had a baby... you would get Dragon Marked for Death.
Had to assign a button to the Enter key in order to get through the controller settings on first launch (I used R4). The keyboard overlay does not work for this. Once controller options are set, the Enter key assignment is no longer needed.
Assigned R4 to Enter key in order to finish controller settings on first launch.
This game is fantastic on the Steam Deck. IMO, this game feels perfect for this device. I'm basically repeating what I said in my previous report, but this I've had the opportunity to play multiplayer. So far, I've built a charater up to the 30's only in multiplayer games with a friend. It's been a blast! No problems, no lag, no slowdown, etc. I've played both as a host and guest in a game. No problems. Silky smooth!
This game seems to work very well so far. I haven't noticed any of the audio problems mentioned so far.
Changed L4 to enter key to get through the initial control setup (hitting enter on the keyboard overlay doesn't work for some reason).
Other than assigning a button to the enter key to get through the initial setup, I haven't had any problems running this game on Steam Deck. I've noticed no audio problems that are mentioned in the Steam Deck Compatibility details on the store page. Nor have I noticed any non-Steam Deck controller icons... although they may differ if you choose to alter your controller settings from the norm in the initial setup. I haven’t played multiplayer yet, but so far this seems to be running very smooth.
The game is fun alone, but having the issues I'm seeing on multiplayer is a bummer. For now I just stream from my laptop.
Terrible performance problem on multiplayer only. It extends to the people I'm playing with as well. The game drops incredibly in frame rate for everyone involved to the point that it's barely playable. I have tried switching to my windows laptop and playing with the same people, and performance is flawless.

Works mostly without issues. Fullscreen is broken and the intro cutscene unlocked after finishing the main story does not play properly.
Minor audio crackling is noticeable every now and then.
.Enabling fullscreen mode freezes the game. People have reported issues with enabling it on Windows as well, and while developers have tried addressing this, the issue persists. Not sure if related to Proton or a bug in the game itself.
The framerate sometimes dips below 60 during netplay. Very occasionally there are major slowdowns as well. This is possibly related to the game's netcode and nothing to do with Proton though.
After finishing the main storyline, the game starts showing an intro cutscene on launch. This intro usually freezes at some point if you let it play, but skipping it is still possible and moves you into the main menu.
Occasionally the game process hangs after exiting, requiring you to manually kill the process.

Fullscreen mode is broken, but otherwise works perfectly, netplay included.
Enabling fullscreen instantly freezes the game.
In some quests during multiplayer, framerate dipped to around 50FPS temporarily. Nothing major.
Add "PULSE_LATENCY_MSEC=30 %command%" to the game launch options to fix it.
There is a little crackling sound that I didn't notice before, but it completely goes away with the solution provided.
installed, hit play, worked out of the box including steam controller, MP has some issues but this occurs on windows as well
Needs more testing, but everything works flawlessly so far. Online play is a little wonky, but that has nothing to do with Proton.