Several factors contribute to the 45 FPS cap in Call of Duty: Modern Warfare 3:
For the most consistent experience, ensure your GPU drivers are updated directly from the NVIDIA or AMD websites rather than relying on Windows Update. Additionally, for the newer 2023 release, setting a to "Unlimited" within the game menu is essential to prevent the engine from self-throttling during high-action sequences. *BEST* Graphics Settings for More FPS Modern Warfare 3 ! cod mw3 45 fps fix
