Mouse Sensor Angle Snapping & Prediction Diagnostic
Draw freehand shapes, circles, and slight angles on the high-polling canvas below to detect if your mouse sensor firmware is artificially straightening your aim.
Draw a slow, medium-sized circle. If you see straight diamond facets or flat line segments at the top/sides, sensor prediction is active.
Try drawing a line tilted slightly upwards (5-10ยฐ). With angle snapping, the cursor will stubbornly stay on y=0 before abruptly stair-stepping.
Quickly slash diagonally from bottom-left to top-right. True raw input shows slight natural hand waves; snapping forces a rigid straight ruler edge.
Why Modern Gaming Mice Disable Angle Snapping by Default
In the early 2000s, optical sensors (such as the Avago ADNS-3090 era) often had hard-coded prediction algorithms enabled to compensate for poor sensor resolution on cloth surfaces and to assist in Microsoft Paint and office drafting tasks.
In modern esports (PixArt 3360, 3370, 3395, 3950, and Focus Pro 35K), sensors feature True 1:1 Raw Tracking. Any artificial straightening eliminates the fine 1-pixel diagonal adjustments required to track a head glitching opponent behind a box on CS2 Mirage or Valorant Ascent.
Frequently Asked Questions
What is mouse angle snapping (sensor prediction)?
Angle snapping (also known as mouse prediction or angle correction) is a firmware algorithm in optical/laser sensors that detects when you are moving your mouse in an approximately straight line and artificially straightens your trajectory by ignoring minor vertical or horizontal jitter, snapping your cursor onto a flat horizontal, vertical, or 45-degree axis.
Why is angle snapping terrible for competitive FPS games like CS2 and Valorant?
In tactical shooters, micro-adjusting your crosshair to an enemy's head requires tiny diagonal curves and organic micro-corrections. When angle snapping is active, the mouse sensor fights your natural muscle memory, locking your crosshair onto horizontal levels or stair-stepping over pixel diagonals, causing missed headshots and awkward jagged tracking.
How does this online test detect angle snapping?
When you draw freehand circles, continuous diagonals, or slight inclines on this test canvas, a true 1:1 raw sensor (like PixArt 3395 or Logitech HERO 2) will produce continuous microscopic human hand tremor with varying dx/dy deltas. If your sensor firmware has angle snapping, you will see artificial flat line segments where dy = 0 or dx = 0 stretches across multiple consecutive samples.
How do I turn off angle snapping?
Open your mouse manufacturer's software (Razer Synapse, Logitech G HUB, SteelSeries GG, Wooting, or Zowie hardware switches). Search under 'Sensor Settings' or 'Surface Tuning' for 'Angle Snapping', 'Prediction', or 'Path Smoothing' and ensure it is set to OFF.