Did this issue start after a or driver installation ? Does this 45 FPS lock happen in menus, gameplay, or both ? I can provide tailored steps for your exact PC build. Share public link
The most effective fix for the 45 FPS cap lies within the graphics control panel. For NVIDIA users, the issue frequently stems from the "Low Latency Mode" setting or the global V-Sync configuration. To resolve this, players should navigate to the NVIDIA Control Panel. Within the "Manage 3D Settings" tab, the user must locate "Vertical Sync" and ensure it is set to "Off" globally, or specifically for the MW3 profile. Concurrently, setting "Low Latency Mode" to "Ultra" or "On" can prevent the driver from forcing frame buffers that cause the lock. Once these changes are applied, the player must ensure that V-Sync is also disabled inside the MW3 in-game settings menu. By removing the double-buffering mandate from both the driver and the game, the engine is free to render frames as fast as the hardware allows, breaking the 45 FPS ceiling.
By following these steps, you should be able to break through that 45 FPS ceiling and achieve a smooth, competitive frame rate in Modern Warfare 3.
If the game thinks your monitor is running at 90Hz (instead of 144Hz or 240Hz), it will cap FPS to half that rate. Sometimes Windows Update resets your refresh rate.
: For some NVIDIA users, disabling Resizable BAR in the BIOS has fixed sudden FPS drops. For AMD users, try disabling Smart Access Memory (SAM) . cod mw3 45 fps fix
: Set your PC power plan to "High Performance" or "Ultimate Performance" in the Control Panel. 3. Update or Clean Install GPU Drivers
A corrupted configuration file can force bad video settings every time the game launches. Close the game.
Download to completely wipe old driver remnants.
: Open the graphics settings and disable V-Sync. This setting can match your FPS to an incorrect monitor refresh rate sub-division. Did this issue start after a or driver installation
| GPU | Expected FPS (1080p, Low/Med) | At 45 FPS, suspect | | :--- | :--- | :--- | | GTX 1060 / RX 580 | 60–80 | VSync or render resolution | | RTX 2060 / RX 5600 XT | 90–110 | Driver or power saving | | RTX 3060 / RX 6600 | 130–150 | VRAM limit or thermal | | RTX 3080 / RX 6800 XT | 180–220 | Half-rate VSync only |
Turn V-Sync OFF for both gameplay and menus. While V-Sync prevents screen tearing, it often introduces input lag and caps frame rates to your monitor’s refresh rate.
Many players set a global 45 FPS cap for video recording. Open RTSS and set the Global FPS limit to 0 (zero).
(2023), players have found success with several technical tweaks and setting adjustments. Common Fixes for 45 FPS Caps and Low Performance Share public link The most effective fix for
: Open options.4.cod23.cst (or similar .cst file containing "cod23") with Notepad. Fix : Search for CapFps and ensure it is set to false .
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Confirm the Screen Refresh Rate slider matches your monitor's native technical specifications. Configure V-Sync and Eco Mode