Serious Sam 3 Cannot Set Display Mode Exclusive Official

after starting in windowed mode is a known fix for artifacts. Secondary Troubleshooting DPI Scaling : Right-click the game's executable ( Properties > Compatibility > Change high DPI settings , and check Override high DPI scaling behavior Steam Launch Options

The settings file might have corrupt or incompatible video parameters. serious sam 3 cannot set display mode

Right-click your Windows desktop and select . Scroll down and click on Advanced display . Locate the Refresh rate drop-down menu. Temporarily lower it to 60 Hz . after starting in windowed mode is a known fix for artifacts

Modern gaming monitors often run at 144Hz, 165Hz, or 240Hz. Serious Sam 3 never tested these refresh rates. Sometimes, the game requests a mode that combines 4K resolution with a high refresh rate, and the video driver refuses. Scroll down and click on Advanced display

You can also try adding -safe to launch with minimal video settings. 4. Graphics Driver and DPI Settings