The reporting interval sets a small waiting time
A mouse does not stream every movement continuously. It measures motion, then sends updates to the computer at intervals. Polling rate, measured in hertz (Hz), describes how many reports it sends each second: at 1,000 Hz, for example, the interval is one millisecond. If a movement happens just after a report, the computer may wait nearly a full interval for the next one; on average, that wait is about half an interval.
Raising the rate shortens that particular wait. It can make fast movements feel more immediately reflected on screen, especially when a game or other application is also responding quickly. But it does not make the mouse sensor inherently more accurate, nor does it remove delays elsewhere in the chain, such as the computer processing the input and drawing the next frame.
Why the highest setting is not always best
More frequent reports mean more input data for the computer to handle. On a modern system, ordinary polling rates are usually easy to manage, but very high rates can add processing overhead, and wireless mice may use more power when reporting more often. The benefit can also become hard to notice once the reporting interval is already shorter than other delays in the system.
That is why polling rate is best understood as one part of responsiveness, not a quality score by itself. A higher setting can reduce one source of waiting, but the feel of a mouse still depends on the sensor, the computer, the display, and the task. For everyday pointer use, the difference may be subtle; during quick, precise movement, even a small reduction in input delay can be more apparent.
