Refresh Proton prefix can help.
I've removed the prefix and ran the game again and I keep getting this error when alt-tabbing
Might be related to GNOME shell. I can safely Alt+Tab while in KDE Plasma. Your GPU driver is kinda old, you may try to update it also.
No issue at all with XFCE4 (xubuntu 18.04.4), alt+tab works fine.
Manjaro 19.0.2 with GNOME (5.5.8-1-MANJARO)
GTX 1650 with proprietary 440.64 driver
Proton 5.04
The game will "launch" with the Bethesda intro animation and stay stuck on a black screen. No other errors/popups present themselves and have to alt-tab out of the game to kill it.
For me is working very well with GTX1050 2GB and 440.66.03 Vulkan Drivers
Arch Linux + XFCE
for me performance is very bad
RTX 2070 440.64
Manjaro + XFCE
VULKAN LOG:
steam-1148590v.log
D3D LOG:
steam-1148590d3d.log
OGL LOG:
steam-1148590.log
Game runs, but stutters and lags when moving the mouse. I can confirm its completely related to the mouse, as using the arrow keys to turn, DOOM 64 does not stutter and freeze.
This is exactly what happens in Blood: Fresh Supply, they both use the KEX Engine.
https://github.com/ValveSoftware/Proton/issues/2689#issuecomment-565897776
DOOM 64 (1148590)
Issue transferred from https://github.com/ValveSoftware/Proton/issues/3966.
@cncz42 posted on 2020-06-10T18:31:08:
Mice with high polling rates cause heavy fps drops when moving camera with mouse. This affects other "Kex engine" games as well such as BLOOD: FRESH SUPPLY (which I cannot file a report on due to me owning the gog version of that game and using third party tools to use proton with it)
Start a new game and use a high polling rate mouse to move camera
Similarly to the mouse issue, FPS also tanks if you use a gamepad like the Xbox one.
I tried both games and to make mouse working, I must be looking around for a while and making big circles on my mouse pad. I'm also changing speed so it catches up here and there. I found this while I was trying to find some working settings in game console and was testing those. It suddenly started working flawlessly. It works for Doom 64 and Blood: Fresh Supply as well. From that point, I can play as long as I wish. Only what differs is that mouse will freeze in center of the screen in menu so I must navigate menu using keyboard.
I can't explain that behavior. I tried both oldest and default Proton on Steam and both worked the same way.
Wine-4.0 I have installed from distro is working out of the box without issue, but I'm not getting Achievements. I will use Proton with a bit of mouse training at start of game session.
DOOM 64 (1148590)
Issue transferred from https://github.com/ValveSoftware/Proton/issues/5738.
@Sterophonick posted on 2022-04-01T04:25:27:
Constant stuttering when using a controller. Works fine with keyboard and mouse though.
I see the mouse problem. For me it practically freezes when you move the mouse.
Doom64 does not launch with Proton 10 or 11
Issue transferred from https://github.com/ValveSoftware/Proton/issues/10082.
@tpalli posted on 2026-08-21T09:04:53:
Doom64 does not start with Proton 10 or 11, it displays a dialog with "No matching GL pixel format available". It starts fine with 9.0-4.
Attempt to launch app with new Proton versions.
proton 10.0-4x1 2026-08proton 5.04x1 2020-03
Compatibility Report
System Information
https://gist.github.com/Ryhon0/744a10edb8515b9e5a59e81ee3d1aebd
I confirm:
steam-1148590.log
Symptoms
When the game loses focus it show this message and crashes the game

Here's CRASHLOG.TXT
Everything else works fine
Reproduction