Use FidelityFX CAS and set the strength between 50-80 to sharpen the image without the heavy performance cost of native 4K or ultra-textures.
Navigate to the game’s installation folder, usually under players . cod mw3 45 fps fix
The original MW3 was optimized for Windows 7. On newer versions of Windows, this can cause a performance "crippling" effect where FPS is halved. Use FidelityFX CAS and set the strength between