Fix | Cod Mw3 45 Fps

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Fix | Cod Mw3 45 Fps

In 80% of cases, the 45 FPS lock in MW3 is caused by a conflict between and V-Sync . The game tries to dynamically scale your resolution to save performance, but if it conflicts with your monitor's refresh rate, it gets stuck.

If the game thinks your monitor is running at 90Hz (instead of 144Hz or 240Hz), it will cap FPS to half that rate. Sometimes Windows Update resets your refresh rate.

By following these tips and methods, you should be able to fix the 45 FPS cap in Modern Warfare 3 and enjoy a more immersive gaming experience.

Back up the file:

The older engine often suffers from compatibility issues on modern Windows OS (Windows 10/11) that can artificially cap your performance.


In 80% of cases, the 45 FPS lock in MW3 is caused by a conflict between and V-Sync . The game tries to dynamically scale your resolution to save performance, but if it conflicts with your monitor's refresh rate, it gets stuck.

If the game thinks your monitor is running at 90Hz (instead of 144Hz or 240Hz), it will cap FPS to half that rate. Sometimes Windows Update resets your refresh rate.

By following these tips and methods, you should be able to fix the 45 FPS cap in Modern Warfare 3 and enjoy a more immersive gaming experience.

Back up the file:

The older engine often suffers from compatibility issues on modern Windows OS (Windows 10/11) that can artificially cap your performance.