Do not download from random file hosting sites. The official home of the fix is (maintained by MarkC himself).
This is the step most people miss. The registry fix above does not work unless your Windows mouse pointer speed is set to exactly (the middle notch).
Why is this specific fix the most recommended solution in the gaming community? the markc windows 10 8.1 8 7 mouse acceleration fix download
Download a small tool called (by MarkC as well). Run it, move your mouse slowly then quickly. If the fix worked, the graph will show a flat line—no acceleration.
If you use a high-DPI mouse or a high-resolution monitor (like 1440p or 4K), the MarkC fix helps maintain consistent sensitivity across different desktop resolutions and in-game settings. Do not download from random file hosting sites
The is a registry-based solution designed to provide a 1-to-1 ratio between physical mouse movement and cursor movement on Windows. It is widely used by competitive gamers to ensure consistent aiming by removing the built-in Windows "Enhance Pointer Precision" curve, which can cause erratic cursor behavior in older games. Why You Might Need the MarkC Fix
October 2025 Compatible with: Windows 11 (via Win10 fix), Windows 10 22H2, Windows 8.1, Windows 7 SP1, Windows 8. The registry fix above does not work unless
MarkC (a well-known member of the overclock.net and ESReality communities) developed a registry fix that creates a perfect 1:1 mouse movement response. Unlike simply turning off acceleration in Windows—which can sometimes leave a "threshold" where acceleration still triggers at very high speeds—the MarkC fix completely flattens the acceleration curve.
The is the gold standard for achieving a 1-to-1 mouse-to-screen response. Here’s everything you need to know about why you need it and how to install it.
Without the fix, moving your mouse 2 inches slowly might move your crosshair 100 pixels, but moving it 2 inches quickly might move it 300 pixels. With the MarkC fix, 2 inches of physical movement always equals the same cursor distance, regardless of speed. Your hand becomes the only variable.