In the same Compatibility tab, check Disable fullscreen optimizations to prevent Windows from interfering with the game's display mode. FPS & Performance Optimization

If you're dealing with crashing at startup or poor performance, here are the most effective fixes compiled from Steam community guides and technical troubleshooting reviews . Startup & Crash Fixes

Scorn: remove stutters, fps drops, freezes - Steam Community

Disabling the Steam Overlay in the game properties can sometimes provide a small FPS boost and reduce crashing on mid-range systems. General Maintenance

Ensure you are on version 1.1.8.0 or higher. This major patch fixed significant checkpoint and stability issues that plagued the launch version.