Compatibility Report

• Name of the game with compatibility issues: ARC Raiders
• Steam AppID of the game: 1808500

System Information

• GPU: NVIDIA GeForce RTX 3060 (8GB VRAM)
• Video driver version: nvidia 590.48.01
• Kernel version: 6.17.0-22-generic
• Link to full system information report as Gist: ⚠️ ADD GIST LINK HERE
• Proton version: Proton Experimental (Build 23062045, bleeding-edge branch)

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.

Symptoms

The game worked perfectly on Linux before the Riven Tides update (patch 1.26.0, released April 28, 2026). After that update, the game launches briefly and then closes immediately without showing any window or error dialog.

Key errors found in the Proton log (steam-1808500.log):

1. Access violation crash in the game executable.

arror_launch_arc.txt

1. RPC service failure:

The game never creates its own log file (PioneerGame/Saved/Logs/) because it crashes before initialization completes. EasyAntiCheat installs and reports success, so EAC is not the cause.

Reproduction

1. Install ARC Raiders (AppID 1808500) on Ubuntu 24.04 with Proton Experimental (bleeding-edge)
2. Add launch option: PROTON_ENABLE_WAYLAND=1 %command%
3. Delete the existing Proton prefix: rm -rf ~/.steam/debian-installation/steamapps/compatdata/1808500
4. Launch the game
5. Game process starts, registers ~18 subprocesses, then terminates within ~2 minutes with the above exceptions

Tested Proton versions: GE-Proton10-30, Proton Experimental (bleeding-edge 23062045)
All versions fail with the same result after the Riven Tides update.

⚠️ Full steam-1808500.log attached / linked in Gist above.