Mouse Pointer Event Rate

Introduction

Mouse Pointer Event Rate estimates how often pointer-move events arrive in the browser while you move. It is not a USB hardware polling-Hz measurement. Use it for relative browser-context clues under your current load.

What this tool does

While you move inside the pad, the page timestamps move events and derives an events-per-second style estimate, often with smoothing and a peak marker. Guidance asks for continuous motion. The UI is honest that browsers, vsync, and main-thread load cap what you observe.

When to use it

Estimate event rate when motion feels chunky, after changing wireless mode, or when comparing machines under similar load. Prefer Mouse Visual Delay Check for motion-to-pixel feel, Mouse Drag Test for button-held tracking.

How it works

pointermove or mousemove counts in a sliding window yield an estimate. Browsers may coalesce events. No USB descriptor or bInterval is read. No permissions are required. Values stay session-local.

Step-by-step instructions

1. Open Mouse Pointer Event Rate and move into the pad.
2. Sweep continuously for several seconds without pausing.
3. Note typical versus peak estimates under your current tab load.
4. Retest after closing heavy tabs or switching wired/wireless, then close the tab when finished.

Common problems

Tiny twitches produce unstable estimates. Trackpads often report fewer events than gaming mice. Remote desktop adds another sampling layer. Do not cite this alone as USB Hz proof for an RMA.

Privacy explanation

Event counts stay in the browser. DeviceHub does not upload trajectories or fingerprint your pointing device. No permissions are requested.