Mouse Acceleration Test | Joltfly
Benchmark your mouse sensor linearity, identify unwanted pointer acceleration curves, and verify true 1:1 tracking with our interactive acceleration analyzer. Move your pointer inside the testing canvas below to record real-time velocity curves, measure peak acceleration in pixels per second squared or G-force, and run an A-to-B Physical Return test to confirm whether your cursor maintains exact physical fidelity.
We receive many questions about whether gamers should enable mouse acceleration in their games. In general, enabling mouse acceleration is not the best option for most users.
You might find that enabling mouse acceleration makes your aim inconsistent and it feels unnatural. Therefore, most games do not support it by default and you have to enable it yourself.
What Is Mouse Acceleration?
Mouse acceleration is a tracking behavior where the distance your on-screen cursor travels depends not only on how far you move your physical mouse, but also on how fast you move it.
- Linear 1:1 Tracking (Zero Acceleration): Moving your mouse 10 centimeters across your mousepad always moves your cursor the exact same number of pixels on your screen, regardless of whether you swipe in half a second or slide across in five seconds.
- Positive Acceleration: Moving your mouse quickly over a set physical distance causes the cursor to travel significantly farther than moving it slowly over that exact same distance.
- Negative Acceleration: Moving your mouse at very high speeds causes the cursor to travel a shorter distance than expected. This usually happens when an optical sensor reaches its maximum tracking speed and begins dropping coordinate packets.
For competitive gamers and digital artists, true 1:1 linear input is essential. When acceleration is active, your brain cannot build reliable muscle memory because physical hand displacement does not produce consistent cursor placement.
Mouse Acceleration vs. Other Sensor Tests on Joltfly
To keep your testing focused and accurate, here is how this tool fits alongside our other hardware benchmarks:
- Mouse Acceleration Test (This Tool): Measures tracking linearity, positive and negative velocity curve distortion, and physical A-to-B return error.
- Mouse Latency Test: Measures the millisecond signal delay and frame delivery timing between physical hand motion and display response.
- Mouse Polling Rate Test: Measures how many times per second in Hertz (Hz) your mouse transmits coordinate packets over USB.
- Mouse Cursor Speed Test: Measures raw tracking velocity and distance across your monitor.
How to Test for Mouse Acceleration
Our tool provides two primary methods to evaluate your sensor: continuous curve monitoring and the physical A-to-B return benchmark.
Method 1: The A-to-B Physical Return Benchmark (Most Accurate)
This test isolates sensor acceleration using a physical reference point on your desk:
- Select A-to-B Return Test from the mode menu.
- Place your mouse on your mousepad against a flat physical stop, such as a keyboard edge, a book, or a wooden ruler.
- Click inside the canvas to set Point A.
- Swipe your mouse rapidly across your mousepad to the right (a fast flick).
- Move your mouse slowly back to the left until it touches your physical stop at the exact starting point.
- Click the mouse to record Point B.
- If your mouse has zero acceleration, Point B will land directly on Point A (0 to 6 pixels of human hand placement error). If your cursor lands far to the right or left, acceleration or deceleration is present.
Method 2: Continuous Tracking and Linearity Sprint
- Keep the tool set to Continuous Tracking or choose the 5s Linearity Sprint.
- Move your pointer back and forth across the canvas, alternating between very slow glides and fast velocity sweeps.
- Watch the Speed/Distance Plot and the Linearity Profile badge. If your mouse maintains linear scaling across all speeds, your Linearity Score will remain near 95% to 100%.
Understanding Your Acceleration Telemetry
Our testing engine analyzes motion vectors using microsecond timestamps and coalesced event inspection. Here is what each metric on your dashboard reveals:
Current Accel & Peak +Accel (+A)
Current Accel displays your instantaneous rate of velocity change. Peak +Accel records your highest positive velocity surge. In standard pixel mode, this is displayed in pixels per second squared (px/s2). When switched to G mode, it converts acceleration into standard gravitational units based on standard display DPI scaling.
Peak -Accel (-A)
Records your sharpest deceleration stop. If your negative acceleration spikes dramatically while your positive acceleration remains flat, your sensor may be struggling to track high deceleration stops, which can lead to aim spinouts.
Linearity Profile
An automated classification based on your sensor tracking curve:
- 1:1 Raw: Ideal linear input. Cursor displacement scales directly with physical distance.
- +Accel Curve: Positive acceleration detected. Moving fast increases artificial sensitivity, common when Windows Enhance Pointer Precision is enabled.
- -Decel Spinout: Negative deceleration detected. High-speed flicks lose tracking fidelity and fall short of expected distances.
Linearity Score (%)
Evaluates whether your mouse covers an identical number of coordinate counts across both slow and high-velocity strokes. A score above 90% confirms tournament-grade sensor linearity.
Return Offset (px) & Return Error (%)
Generated during the A-to-B Return Test. Return Offset measures the absolute Euclidean distance between your start anchor and return point. Return Error expresses that offset as a percentage of your total stroke length. An error under 3% indicates flawless physical consistency.
Peak Velocity (px/s)
The maximum instantaneous tracking speed achieved during your test. High-velocity flicks are required to reveal whether your mouse maintains linear tracking at high speeds.
Mouse Acceleration Types: Comparison Table
Use this reference table to identify how different acceleration profiles impact gaming and precision work:
| Tracking Profile | How It Behaves | Muscle Memory Impact | System Cause | Recommended For |
|---|---|---|---|---|
| 1:1 Raw Input | Constant ratio of hand distance to cursor pixels | Perfect consistency | Raw input enabled, Enhance Pointer Precision off | First-person shooters, competitive gaming, graphic design |
| Positive Acceleration | Fast flicks travel farther than slow glides | Over-flicks on fast swipes, inconsistent angles | Windows Enhance Pointer Precision, office mouse firmware | Casual browsing, small mousepads with low sensitivity |
| Negative Acceleration | Fast flicks travel shorter than slow glides | Under-aiming, cursor stalls during rapid turns | Outdated optical sensors, dirty lenses, low IPS tracking limits | Not recommended for any application |
| Custom Linear Curve | Controlled, deliberate acceleration curve | Predictable scaling | Specialized third-party drivers (such as RawAccel) | Arena FPS veterans (Quake, Unreal Tournament) |
Why Competitive Gamers Turn Off Mouse Acceleration
In tactical shooters such as Counter-Strike 2, Valorant, and Apex Legends, crosshair placement depends entirely on physical intuition. When you spot an opponent on your screen, your motor cortex calculates the exact physical distance your hand needs to travel on your mousepad.
When mouse acceleration is active, distance becomes dependent on time and speed. If you panic and flick quickly toward an enemy, your cursor will overshoot the target. If you swipe slowly, your crosshair will fall short. Disabling acceleration ensures that a 5-centimeter hand movement always corresponds to the exact same rotational angle in the game world.
The only exception to this rule is a small group of arena FPS players who use custom curve software like RawAccel. Unlike standard Windows acceleration, custom curves apply deliberate, mathematically capped linear multipliers designed for specific tracking scenarios.
How to Disable Mouse Acceleration in Windows 11 and 10
Windows enables an acceleration algorithm called Enhance Pointer Precision by default. To turn it off and ensure true 1:1 raw tracking, follow these steps:
- Press the Windows Key, type Control Panel, and press Enter.
- In the top right search bar of the Control Panel, type Mouse, then click on Mouse Settings or Change mouse settings.
- In the Mouse Properties window, select the Pointer Options tab.
- Under the Motion section, uncheck the box labeled Enhance pointer precision.
- Set your pointer speed slider to the 6th notch (the exact middle position). This provides a native 1:1 pixel multiplier without digital skipping.
- Click Apply, then click OK.
- Return to this test and run the A-to-B Return Test to confirm your cursor now tracks linearly.
Frequently Asked Questions
Negative acceleration occurs when a mouse sensor reaches its physical tracking speed limit, measured in Inches Per Second (IPS). When you flick the mouse faster than the optical lens and digital signal processor can process surface frames, the sensor fails to register every count, causing the cursor to travel a shorter distance on your screen.
A return offset of 0 to 6 pixels (an error rate under 3%) is considered a passing score. This minimal discrepancy accounts for physical hand realignment when touching the physical stop on your desk. An offset exceeding 20 pixels indicates active software acceleration or sensor tracking distortion.
No. DPI (Dots Per Inch) simply changes your baseline hardware sensitivity. Higher DPI settings register more tracking counts per inch of physical travel, but that multiplier remains linear unless software acceleration or sensor smoothing algorithms are activated.
Almost all modern gaming mice use flawless optical sensors (such as the PixArt PMW3360, PAW3395, or Razer Focus Pro) that have zero built-in hardware acceleration. However, older laser sensors (such as the Avago ADNS-9500 or ADNS-9800) had an inherent 2% to 5% hardware acceleration flaw due to how their laser illumination read surface microscopic textures.
Some games feature their own built-in mouse acceleration sliders in their settings menus. Open your in-game control settings, verify that Mouse Acceleration is set to Off, and turn on Raw Mouse Input. Raw Input forces the game engine to read direct hardware packets from the USB driver, completely ignoring Windows desktop settings.
