Hello @zefrof, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/3437#issuecomment-738346116.
Sorry, I didn't see/know that. Thank you for moving it!
Compatibility Report
System Information
I confirm:
Issue Report
steam-400940.log
Symptoms
When playing Budget Cuts (tried The Lab as well) there's a constant crackling sound coming from both speakers. The crackling goes away when using an older version of Proton (5.0-10 doesn't have audio issues). Native games also don't have any audio crackling. Leading me to believe it's an issue with Proton 5.13-2.
Of note, the audio works fine until step 3 below. Once the audio starts crackling though it doesn't stop until I reboot SteamVR.
Reproduction