How Refresh Rate and Input Lag Affect Scores
See how 60Hz, 144Hz, 240Hz displays and input devices can change reaction test results.
Frame interval differences
A 60Hz display refreshes about every 16.7ms, 144Hz about every 6.9ms, and 240Hz about every 4.2ms. The frame that displays the signal can slightly shift the measured result.
Input device latency
Wired mice, wireless mice, trackpads, and mobile touchscreens handle input differently. Touch input can be recorded later depending on browser and device behavior.
Fair testing tips
Close background apps, repeat tests in the same browser tab, turn off battery saver, and prefer a monitor over a TV for more stable results.
These tests are for entertainment and self-improvement purposes only. They are not medical or professional assessments.