Compatibility Report

• PC Building Simulator 2
• Steam AppID of the game: N/A (Epic Games Only)

System Information

• GPU: Nvidia RTX 3090
• Video driver version: nvidia 590.48.01
• Kernel version: Linux 6.18.3-2-cachyos
• System Information Report: https://gist.github.com/QPCrummer/dcf7738b20cea94eed3e7781752c9eb5
• Proton version: Proton-cachyos 10.0-20260101 (https://github.com/CachyOS/proton-cachyos/releases/tag/cachyos-10.0-20260101-slr)

Also, I am using the COSMIC DE (which is Wayland) if that makes a difference.

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.

Proton Logs were not supplied despite using PROTON_LOG=1 and also explicitly setting the log path: PROTON_LOG_DIR=/home/qpcrummer/Downloads

However, the game itself did produce logs when crashing which may be useful: https://gist.github.com/QPCrummer/7c00c681cc75659e751990b771a83c3f

Symptoms

The game is able to launch into the main menu relatively consistently (occasionally crashes a few seconds after starting). When loading into the Free Build mode, the game has extreme stutters, then after a few seconds it crashes with a small popup from Unity that appears for less than a second before the game stops.

Reproduction

1. Launch PCBS2 (I used Heroic Launcher)
2. Start a new Free Build world
3. Move around. The game should be stuttering and eventually crash
4. Logs are produced at ~/.Games/Heroic/Prefixes/default/PC Building Simulator 2/drive_c/users/steamuser/AppData/Local/Temp/Epic Games Publishing/PCBS2/Crashes