Go to Options → Graphics → NVIDIA Reflex Low Latency
: Turn VSync OFF in both gameplay and menu settings to remove potential refresh rate syncing issues. 5. Third-Party Software Interference
Change your active plan to or Ultimate Performance . Disable Background Overlays
I can provide highly specific steps once I know your hardware configuration. AI responses may include mistakes. Learn more Share public link cod mw3 45 fps fix
| Category | Recommended Setting | | :--- | :--- | | | Custom | | Render Resolution | 100 | | VRAM Scale Target | 80 (Lower to 70 if stutters occur) | | Upscaling/Sharpening | FidelityFX CAS | | Texture Resolution | Low | | Shadow Quality | Low or Normal | | Ambient Occlusion | Off | | Screen Space Reflections | Off | | Tessellation | Off or Near |
Navigate to Settings > Graphics > Display . Set Custom Frame Rate Limit to Custom or Unlimited . If set to Custom, manually increase the Gameplay Custom Frame Rate Limit slider to match your monitor's refresh rate.
Close MW3 and the Steam/other launcher completely. Go to Options → Graphics → NVIDIA Reflex
Edit config_mp.cfg:
Windows features sometimes restrict hardware performance to save power or manage background applications. Enable Hardware-Accelerated GPU Scheduling (HAGS)
Disable the overlay interface within the launcher settings for Call of Duty. Disable Background Overlays I can provide highly specific
Sometimes the issue isn’t the game settings themselves, but rather your system or drivers.
The modern reboot includes detailed in-game limiters that might be misconfigured.
The most common cause for a 45 FPS cap is having "Sync Every Frame" (V-Sync) enabled on a monitor that isn't running at a standard 60Hz or 120Hz. If your monitor's refresh rate is fluctuating or set to a non-standard value, V-Sync may lock your FPS to a lower fraction like 45.