Compatibility Report

• Name of the game with compatibility issues: IL-2 Sturmovik: Battle of Stalingrad
• Steam AppID of the game: 307960

System Information

• GPU: 9070XT
• Video driver version: mesa 2:26.1.0-1
• Kernel version: 7.0.9-1
• Link to full system information report as Gist: https://gist.github.com/r3animate/a7a3a4b5a2f8501cc9dbecfc2f368384
• Proton version: Proton Experimental (11) (also happens on 10, proton-ge10-34etc)

I confirm:

• [x] that I haven't found an existing compatibility report for this game.
• [x] that I have checked whether there are updates for my system available.

steam-307960.log

Symptoms

There are odd square purple lines visible at terrain seems (white lines on water too)

Reproduction

If you don't have a controller and want to recreate it, start a flight in the air / press autopilot and just let it fly around, you'll see them. Also happens on Steamdeck.