All Unity Engine games experience random crashes

Compatibility Report

• Name of the game with compatibility issues: All games that run in Unity Engine 5 (Among Us, ULTRAKILL, Beat Saber, Cuphead, etc.)

System Information

• GPUs: EVGA GeForce GTX 1060 3GB ACX 2.0, Intel UHD Graphics 620
• Driver/LLVM versions: nvidia 450.80.02, Mesa Intel 20.2.4
• Kernel versions: 5.9.0-11.1-liquorix-amd64 (ubuntu 20.04), 5.9.0 Arch amd64
• Link to full system information report as Gist: https://gist.github.com/bonkmaykrQ/186c8cedcb9e0550c9d107f78daf6775
• Proton version: 5.13-2

I confirm:

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

Symptoms

The games are still very playable and most of them work without problems but there are a select few cases where crashes happen in a few select Unity games.

Reproduction

• Among Us: crashes sometimes when returning to main menu screen
• ULTRAKILL: crashes when the player dies on Cybergrind mode and the stats screen appears.
  Both of these are UI related issues.

Happens regardless of hardware or software used. I've tested this on both my gaming PC and my Envy x360 laptop.

No source files or tests are named. Start with the two reported reproduction points: returning to the Among Us main menu and the ULTRAKILL Cybergrind stats screen, using Proton 5.13-2 and the listed hardware configurations. A useful outcome would identify a reproducible cause and the affected Unity compatibility path, but the report does not define a specific fix.