Set to Full Screen Exclusive . Borderless Windowed can sometimes cause Windows to cap frames to reduce input lag, resulting in lower performance.
The most frequent culprit behind a 45 FPS lock is how the game manages refresh rates and vertical synchronization. Disable V-Sync and Match Refresh Rates
Note: A true 45 FPS cap (exactly half of 90Hz) almost always points to a VSync or framerate limiter misconfiguration. cod mw3 45 fps fix
Windowed modes often force your game to inherit the refresh rate restrictions of your Windows desktop or background applications.
If you’re on a laptop or using a TV, ensure your Windows refresh rate matches your monitor’s actual Hz in Display Settings 3. NVIDIA/AMD Control Panel Cleanup Check if a global limit is overwriting your game settings. NVIDIA Control Panel > Manage 3D Settings > Program Settings > Select Call of Duty Max Frame Rate Radeon Chill Frame Rate Target Control (FRTC) is enabled in the Adrenalin software and toggle it off. 4. Toggle "Resizable Bar" (NVIDIA) or "SAM" (AMD) Some users reported that disabling Resizable Bar in the BIOS (for NVIDIA) or Smart Access Memory (for AMD) immediately unlocked their frames. 5. Reset Your Shader Cache Corrupt shaders can cause "ghost" caps. In-game, go to Restart Shader Optimization Set to Full Screen Exclusive
Ensure your is set to Fullscreen Exclusive . Windows often applies background frame throttling to games running in Windowed or Borderless modes. 4. Re-Optimize Shader Compilation
If you see this symbol, try these fixes even if your internet seems fine: Disable V-Sync and Match Refresh Rates Note: A
Disable the in-game overlay and instant replay features.