Calculate mouse report interval and the latency polling rate contributes.
Average polling latency is half the report interval, so 125 Hz averages 4 milliseconds while 1000 Hz averages 0.5. Going beyond 1000 Hz saves fractions of a millisecond while raising CPU interrupt load. The step from 125 to 1000 Hz is genuinely perceptible, while 1000 to 8000 Hz mostly is not, which is where diminishing returns set in sharply.
Mouse Polling Rate
Report interval = 1,000 ÷ polling rate; average latency is half that interval
Report interval = 1,000 ÷ polling rate; average latency is half that interval Average polling latency is half the report interval, so 125 Hz averages 4 milliseconds while 1000 Hz averages 0.5. Going beyond 1000 Hz saves fractions of a millisecond while raising CPU interrupt load.
The step from 125 to 1000 Hz is genuinely perceptible, while 1000 to 8000 Hz mostly is not, which is where diminishing returns set in sharply.
This calculator takes 4 inputs: Polling rate, Comparison polling rate, Mouse movement speed, Mouse DPI. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.