When the game loses focus it show this message and crashes the game

Here's CRASHLOG.TXT
Everything else works fine
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.
Most helpful comment
Compatibility Report
System Information
VULKAN LOG:
steam-1148590v.log
D3D LOG:
steam-1148590d3d.log
OGL LOG:
steam-1148590.log
Symptoms
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