Game: Bellwright (AppID 1812450)
Proton Version: Proton Experimental and Proton GE tested
OS: Ubuntu (latest)

ISSUE:
Game launches but during loading screen experiences massive memory and CPU leak. CPU spikes to 200%, RAM consumption grows progressively until system forces OOM kill. The Proton log shows thousands of unwind operations (C++ exception handling) consuming all resources.

SYSTEM SPECS:

• CPU: 16-core AMD/Intel (showing 16 CPU threads)
• GPU: NVIDIA GeForce RTX 2060 with driver 580.95.05
• RAM: 16GB total

STEPS TO REPRODUCE:

1. Launch Bellwright with any Proton version
2. Observe loading screen
3. Within 1-2 minutes, RAM consumption grows to 85%+
4. CPU usage spikes to 200%
5. Game freezes and gets OOM killed

PROTON LOG:
Shows extensive unwind operations indicating C++ exception handling loop.

LAUNCH OPTIONS TESTED:

• _force_vk_vendor=-1 %command% -force-d3d11 -windowed
• Various Proton versions and memory limiting attempts
• All result in same memory leak behavior

ADDITIONAL NOTES:
Game works fine on Windows, issue is specific to Linux/Proton.