I'm having some trouble with fullscreen mode on my system. When I try to play a game in fullscreen, it doesn't seem to be in a valid fullscreen state, as part of the screen is still occupied by the KDE taskbar. I have been able to fix it, but it was a bit of a clumsy process. First, I changed the window mode and resolution to 1600x900, then closed the game. Then, I reopened the game and it was running in windowed mode with a border, so I changed the resolution to full HD and full screen, and it worked correctly. Finally, before closing the game, I changed back to the original window mode and lowered the screen resolution.
Video examples and startup videos do not work on the default Proton or Proton Experimental versions. Instead, use the GE version.
I switched to GE-Proton because in the skill tree (Impetus Repository) on the right side there are small videos (attack preview) which do not work with Proton Experimental.
MANGOHUD_CONFIG="position=top-left" MANGOHUD=1 %command%
-Stutters and framedrops here and there but not gamebreaking (typical UE5 issues)
-Upscaling is required and has (yet) no FSR4 option
+No crashes so far
+Gameplay
+Lots of mechanics to tinker your build
+Resetting of all spent resources is free
+Graphics
+Sound
Steam deck is not able to provide enough performance to run the game on at least 30 STABLE fps on the lowest settings with upscaling enabled
Because of the UI scale and horrible performance issues that force you to use aggressive upscaling it becomes hard to read some of the text in-game
Some minor crackling in the first couple of seconds. Didn't appear again
Combination of a steam deck's hardware and all of the "advantages" of "greatly" optomized UE5 game is not a great experience
~/lsfg %command%
Switched light and heavy attack to x,y buttons.
Small text UI
Without Global Illumination, the scenes are not looking according to the creators intent. Anti Aliasing is blurry like coloured snow. See BenchmarKing for reference (Optimized Settings are too heavy, do not work).
Everything set to low drops a lot from 30 fps to 15 fps with significant visual artifacts. Depending on scene (dark runs better, light cirka 20 fps). LSFG helps, but not on frame drops.
BORKED and UNPLAYABLE
game-performance mangohud %command%
taskbar is still visible
works ootb
DXVK_HDR=1 gamescope --hdr-enabled -rt --adaptive-sync -f -W 3440 -w 3440 -H 1440 -h 1440 -r 120 -- %command%
The game isn't terribly well optimized, but runs without any issues on my system. It seems they shipped an executable aimed to be used with Proton/Steam Deck (has Deck in the name). HDR, FSR and FG work fine for me.
Runs very well OOTB with ProtonGE10-10 (no other proton was tested), performance is as good/bad as any other UE5 game: it is a heavy non optimized game so you will need specs to match.
Runs great, no issues.
Don't use the default graphics preset, the recommendations are kinda bad For 1440p try to use at least 55% TSR otherwise the game looks blurry. Play around with the ingame settings. I was able to get around 65-90 fps with around 60% TSR and with some settings on medium and high. The game looks great in this settings and runs really well with 0 stutter and issues for me
mangohud gamemoderun %command%
Frame rate is 1/3 lower than Windows under the same video quality settings, frame rate is about avg 55, 30 (1% low) on Windows, and avg 42, 35 (1% low) on my Linux system. 帧率比Windows低1/3，在相同的视频质量设置下，Windows上的帧率大约是55、30（1%low），而我的Linux系统上的帧率大约是42、35（1%low）。
Play out of the box.
gamemoderun PULSE_LATENCY_MSEC=83 PIPEWIRE_LATENCY=1024/48000 mangohud gamescope -w 2560 -h 1440 -f --sharpness 0.6 --force-grab-cursor -- %command%
Note: use this 2 commands to fix the audio "PULSE_LATENCY and PIPEWIRE"
gamemoderun → Enables GameMode (performance optimizations)
PULSE_LATENCY_MSEC=83 → Sets PulseAudio latency to 83ms (reduces crackling)
PIPEWIRE_LATENCY=1024/48000 → Sets PipeWire buffer size and rate for audio latency control
mangohud → Enables MangoHud (performance overlay)
gamescope → Runs the game in a nested Wayland session
-w 2560 → Sets width to 2560 (upscales from 1080p to 1440p)
-h 1440 → Sets height to 1440 (upscales from 1080p to 1440p)
-f → Enables fullscreen
--sharpness 0.6 → Applies 0.6 sharpness to scaling
--force-grab-cursor → Forces the game to grab the mouse cursor
-- %command% → Executes the game with these options
VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/nvidia_icd.json %command%
At first run it failed with:
"A D3D11-compatible GPU (Feature Level 11.0, Shader Model 5.0) is required to run the engine."
I had to install libraries using winetrickes:
WINEPREFIX=/games/steamapps/compatdata/2277560/pfx winetricks dxvk vkd3d
And changed the proton version to "Proton 10.0-1 (beta)"
