Reports of Call of Duty: Modern Warfare 3 (MW3) being stuck at 45 FPS are often tied to specific Eco Mode settings, hardware-specific features like Resizable Bar, or unoptimized config files. Users encountering this exact 45 FPS cap should prioritize the following technical adjustments. 1. Disable Eco Mode Caps
Open config.cfg (Singleplayer) or config_mp.cfg (Multiplayer) with Notepad.
Editing game files can affect stability or trigger anti-cheat flags if done improperly. Back up files before changing them. cod mw3 45 fps fix
Set the value to your monitor’s refresh rate (e.g., seta com_maxfps "144") or 0 for unlimited.
File: Open options.4.cod23.cst (or similar .cst file containing "cod23") with Notepad. Fix: Search for CapFps and ensure it is set to false. Reports of Call of Duty: Modern Warfare 3
is set to "Off" and that "Custom Frame Rate Limit" is either set to "Unlimited" or a value significantly higher than 45 Disable Third-Party Caps : Check for external framerate limiters in the NVIDIA Control Panel (Max Frame Rate setting), AMD Software: Adrenalin Edition , or background apps like Check Laptop Power Settings
Method 4: Use a frame rate unlocker
Incorrect display modes or frame rate limits can lead to artificial caps.
Sometimes, software outside the game forces a limit on your frame rate. Disable Eco Mode Caps Open config