I'm also having this problem.
System
OS: Linux Mint 21.1 x86_64
Kernel: 5.15.0-58-generic
GPU: Nvidia RTX 3080 TI
GPU Driver: 525.78.01-0ubuntu0.22.04.1
The issue appears to be related to the Nvidia driver; rolling back to 515.86.01 resolves the problem. I first saw this issue on 525.60.11.
I have been suffering from this problem for so long and searching everywhere for game-specific issue posts. My system info
@Zukureneno @maliciousbanjo @liu2z2
Hello, friendly ping, I have myself arrived at this issue too and for me the trigger seems to be the Image Quality setting at 150%, does that affect your game?
My system.
Latest Ubuntu 23.04 daily updates 6.2.0-20
Nvidia 1070
Driver 525.105.17
Proton Experimental
Playing on 1440p physical resolution.
@Zukureneno @maliciousbanjo @liu2z2
Hello, friendly ping, I have myself arrived at this issue too and for me the trigger seems to be the Image Quality setting at 150%, does that affect your game?
My system. Latest Ubuntu 23.04 daily updates 6.2.0-20 Nvidia 1070 Driver 525.105.17 Proton Experimental Playing on 1440p physical resolution.
Can confirm the bug is avoidable when
@Zukureneno @maliciousbanjo @liu2z2
Hello, friendly ping, I have myself arrived at this issue too and for me the trigger seems to be the Image Quality setting at 150%, does that affect your game?
My system. Latest Ubuntu 23.04 daily updates 6.2.0-20 Nvidia 1070 Driver 525.105.17 Proton Experimental Playing on 1440p physical resolution.Can confirm the bug is avoidable when
1. Image Quality < 150%, AND 2. Framerate cap < 60
I can confirm these two properties are what cause the bug. Setting image quality to 100% seems to restore it.
I suppose that's a decent fix, but still annoying that I have to under-run the game's specs.
530.41.03 still has this condition
Can confirm it is working on Driver
nvidia-driver-535/jammy, 535.104.05-0ubuntu0.22.04.4 amd64.
Ubuntu 22.04.3 LTS using Steam proton experimental build 12078547
@Zukureneno Hi there. Is it correct that this issue is no longer a problem?
proton experimentalx5 2023-09proton 7.05x1 2022-12
Repost suggested on: Link
Compatibility Report
System Information
I confirm:
Symptoms
Missing textures / flickering and black boxes while running game above 60 fps limit cap. Doesn't matter the quality settings

Reproduction
Set FPS cap above 60 (mainly 120+)