Cod Mw3 45 Fps Fix -

Modern Warfare 3 uses a significant amount of VRAM. Browsers (Chrome/Edge) and Discord use . When these apps run in the background, they reserve a chunk of GPU memory. When MW3 detects a memory bottleneck, it automatically scales down to 45 FPS to prevent crashing.

This is the most overlooked cause of the 45 FPS lock in 2024/2025.

Switch from Fullscreen Borderless to Fullscreen Exclusive . Borderless modes can sometimes force Windows-level desktop composition locks that cap frame rates at fixed intervals. cod mw3 45 fps fix

This will reset your brightness and audio settings, but not your keybinds.

Whether you are stuck in menus, during cutscenes, or inexplicably capped in the middle of a Highrise duel, this guide will walk you through every possible fix—from simple settings toggles to deep file edits. Modern Warfare 3 uses a significant amount of VRAM

The 45 FPS lock in Modern Warfare 3 is almost never a hardware limitation; it is a software logic war between the game engine, your GPU driver, and Windows.

Restart your game. For many players, this single step instantly unlocks 100+ FPS. When MW3 detects a memory bottleneck, it automatically

Save the file, set it to Read-Only again, and restart.

If you rely on Reflex for latency, try updating your drivers first (see below). However, turning it "Off" is a reliable diagnostic step to see if this feature is the root cause of your 45 FPS jail.

Unlike general low performance due to weak hardware, a fixed 45 FPS cap is almost always a software or configuration issue. The main culprits include:

If you are still stuck at 45, the game’s config file is corrupted.