Disabling this often immediately unlocks your frame rate, though it may introduce some screen tearing. 2. Edit the Config File (For Classic MW3)
Classic MW3 has built-in limits in its configuration files that sometimes default to low values like 40 or 45 FPS. cod mw3 45 fps fix
Open (for single-player) or config_mp.cfg (for multiplayer) with Notepad. Disabling this often immediately unlocks your frame rate,
Sometimes external software imposes a cap that overrides your in-game settings. cod mw3 45 fps fix
The most common culprit for a fixed frame rate is , which can mistakenly cap your FPS to a fraction of your monitor’s refresh rate if it can't hit the target. Go to Options > Advanced Video . Find the Sync every frame option and set it to No .