


Approuved ✅
Very pleasant experience.

Runs perfectly out of the box
Just install and click play, a perfectly seamless experience.
gamemoderun %command%

-force-vulkan
The only reason I used vulkan was due to my NVIDIA card.

-d3d12
Gamescope settings: Frame limit 90hz
Game settings: default, vsync off

Constantly crashes after dying.
My game crashes when restarting levels
Dont die.
works perfect out the box

Game wont start after the recent linux mint kernel update.
I played last week, but now the game wont start after the most recent linux mint kernel update. Have tried proton experimental and default. Verified game cache. Steam says the game is running but the window never appears.
(none)
Runs perfectly with no issues using Proton 9.0-1

Input lag over a second, not playable
When switching to Windowed, the game has completely gone and there's no way to get it back
Input lag over 1 second
Game has a lot of input lag
It is cracking the audio and the input lag is over 1 second to recognize my mouse input, not playable at all

Works flawlessly out of the box
Very smooth gameplay

THE EMPEROR PROVIDES
Just follow the steps for below to convert movies so they display correctly.
-Navigate to /Boltgun/Content/Movies
-Right Click in folder > Open Terminal Here (Alt-Shift F4)
-Run the following command in your terminal:
for FILE in $(find ./ -name '*.mp4'); do ffmpeg -i $FILE -vcodec libx264 -crf 18 output.mp4 mv output.mp4 $FILE chmod 755 $FILE done
You are okay now. Not go on and PURGE THE HERETICS! FOR THE EMPEROR!
Seems to work with no issues didnt play the whole game.

-force-vulkan
I consistently explore the compatibility of games with Vulkan, and in the case of Boltgun, the performance difference was remarkable compared to using DirectX. The overall gaming experience improved significantly, with a more vibrant environment and enhanced graphics. Additionally, I observed a notable reduction in RAM memory consumption with this adjustment.
Works great out of the box.

game runs perfectly
just hit "play" button

Video cutscene not playing
--

Unable to start the game
Unable to start the game, no matter which version of Proton i've tried. That's the first time I see when game doesn't start with Proton at all

Works perfectly with no tinkering.

Black-screen on Start-Up
I did have the cutscene problem like everyone else but found a post on reddit and giving full credit Soulprayer and alosarjos on Reddit for this fix. Follow the steps below to fix your cutscenes:
-Find Warhammer 40,000: Boltgun in your Steam Library after installation
-Right-Click, Manage > Browse local files
-Navigate to /Boltgun/Content/Movies
-Right Click in folder > Open Terminal Here (Alt-Shift F4)
-Run the following command in your terminal:
for FILE in $(find ./ -name '*.mp4'); do ffmpeg -i $FILE -vcodec libx264 -crf 18 output.mp4 mv output.mp4 $FILE chmod 755 $FILE done
-Be patient, may take a couple of minutes

Forced to play in Windowed Mode
Game starts up on Black-Screen
Game started up at black screen, not letting me see anything. However, tinkering and looking steam forums, I found a solution that works and hopefully works for you if you are encountering the same issue.
After starting up, alt-tab and you should see the game in the background. -Move your mouse and spam click on options (your mouse likely freezes on the first click, hence the multiple clicks). -Click on Video -Change Fullscreen Mode to Windowed mode
After this, I got the game up and running smoothly. I haven't checked to see if cutscene bugs occur like everyone else but hopefully this helps!
Helpful Steam Forum/Source: https://steamcommunity.com/app/2005010/discussions/0/3843304884847502375/

PROTON_USE_WINED3D11=1 PROTON_NO_ESYNC=1 PROTON_NO_FSYNC=1 %command%
terrain seem to render incorrectly.
GPU is within min spec, but game is too slow
my gpu here is too old, GTX 660 was released over 10 years ago (2012)

Runs great so far. I can't see the videos, but that's not that bad.
No Videos

Cutscenes would not play - I'm sure the fixes suggested by others would work but I just viewed them out of game in VLC

Really fun game, works out of the box
You have to convert the videos yourself to let them be watchable during gameplay.
For any 40K fan this game's a must play, but others will definitely enjoy it too. The level design is really remarkable and the atmosphere is spot-on!

gamemoderun %command%
Made a script in the installation folder of Boltgun that when ran converted the video files to a supported format that Proton can read. The script is as follows and works without hardware acceleration:
#!/bin/bash
for FILE in $(find . -type f -iname '*.mp4'); do
ffmpeg -i $FILE -vcodec libx264 -crf 18 output.mp4
if [ $? -ne 0 ]; then
echo -e "Error running ffmpeg for $FILE"
exit -1
fi
mv output.mp4 $FILE
chmod 755 $FILE
done
With this, one can play the cutscenes.

-d3d12
Episode 3 had some big arena's which sometimes had a little frame drop
Cutscenes were not showing. Game crashed with dvxk (d3d11), but not with vkd3d (d3d12).
I used the ffmpeg conversion to enable the showing of cutscenes. I used the -d3d12 parameter to use vk3d3 (to avoid complete system crash on dxvk).

Works fine, other than videos being completely borked. Easy enough to fix from the terminal.
gamemoderun gamescope -feh 1440 -- mangohud %command% -d3d12
Videos won't work unless you re-encode them.

-d3d12
Videos have been fixed by developers. So at the moment i have no issues playing the game.

Another user mentioned that the game must be installed on your main drive or it won't launch. The game ran perfectly with the proton version listed once I moved it over. It oculd work with other proton versions, I still happened to have this one selected.
This method also worked for two other games that weren't previously loading, and now do without any tweaks or compatibility layers. Some investigation into this is required.

SteamDeck=1 %command%
To make the videos play on desktop Linux without converting them change your launch options to SteamDeck=1 %command%
Works right out of the box

Works great on Steam Deck

runs great, although expect stutters and other nasty performance problems. cutscenes can be fixed with a simple script.
-d3d12
occasional stutters and micro-freezes. as other people stated it's due to engine's asset streaming. experiencing this even with the -d3d12 launch parameter
cutscenes appear as "missing" due to their encoding not supported by Proton. fixed by applying the following fix: https://www.reddit.com/r/SteamDeck/comments/13sog15/how_to_fix_cinematics_for_warhammer_40000_boltgun/
aside from occasional performance issues, it's a great experience through and through.