If your aim feels inconsistent — great one round, all over the place the next — mouse acceleration is one of the first things to rule out. It's a setting that quietly changes how far your cursor travels depending on how fast you move, and for gaming that's usually the last thing you want.
Without acceleration, the relationship between your hand and your cursor is fixed: move the mouse one inch and the cursor moves the same number of pixels every single time, whether you crept or flicked. That fixed relationship is your DPI, and you can measure it precisely with our DPI Analyser.
Turn acceleration on and that relationship becomes variable. Move slowly and the cursor barely shifts; whip the mouse across the pad and the cursor leaps much further than the distance alone would suggest. The operating system is watching your velocity and multiplying your movement on the fly. The faster you go, the bigger the multiplier.
In one sentence: acceleration means the same physical movement can land in two different places depending on how fast you did it — which is exactly what precise aiming can't tolerate.
Aiming in an FPS is muscle memory. Over hundreds of hours your hand learns "this much movement equals this much turn." That only works if the mapping never changes. Acceleration breaks the mapping: a slow, deliberate adjustment and a fast panic flick no longer cover proportional distances, so the same intention produces different outcomes.
The result is the frustrating pattern a lot of players describe — you can hit a target when you're calm and controlled, but the moment a fight gets fast your shots sail wide. That's not always your skill; it can be the OS rewriting your movement mid-flick. Turning acceleration off makes every flick, micro-correction and tracking pass behave identically, which is why virtually every professional player disables it and relies on a single fixed DPI instead.
Windows ships with acceleration enabled under the friendly-sounding name "Enhance pointer precision." Here's how to disable it:
While you're there, it's worth leaving the pointer speed slider at the middle (6th of 11 notches). That's the 1:1 position in Windows; anything higher or lower applies its own scaling on top of your DPI and muddies your real sensitivity.
macOS applies its own acceleration curve and doesn't expose a simple toggle in System Settings. If you're gaming on a Mac, the cleanest fix is a small utility that disables the curve system-wide, or gaming mouse software that bypasses the OS pointer settings entirely. Many gaming mice let you set a hardware DPI that ignores the OS scaling altogether — which is the most reliable route on any platform.
You don't have to take the setting's word for it. Run our DPI Analyser twice: once moving the mouse slowly across your measured distance, and once moving it quickly. With acceleration off, both passes should report a very similar DPI. If the fast pass reports a noticeably higher number than the slow one, acceleration (or pointer scaling) is still active somewhere — in Windows, in macOS, or in your mouse's own software.
Once acceleration is off and your DPI is stable, lock in your feel properly with the Sensitivity Converter so it carries across every game you play.
For the first day or two, fast flicks will feel like they fall slightly short — your hand is used to the OS "helping" on quick movements. Resist the urge to crank your sensitivity to compensate. Give it a few sessions and your muscle memory recalibrates to the honest, fixed mapping. Almost everyone reports steadier aim within a week, and crucially, your good days and bad days start to look a lot more alike. If you genuinely want a faster feel afterwards, raise your DPI a notch rather than reintroducing acceleration — you keep consistency and just shift the whole scale.