Methods and troubleshooting
Testing guides
Understand what your result means, what affects it, and what to check when a device does not behave as expected.
What Is a Good Reaction Time?
Understand reaction-time ranges, device latency, and how to interpret your score.
PerformanceAverage CPS by Test Duration
Why click speed changes between 1, 5, 10, and 30-second tests.
Input devicesWhy Is My Mouse Double-clicking?
Diagnose switch wear, software settings, wireless interference, and common fixes.
Input devicesHow to Test Every Keyboard Key
A practical process for checking missed inputs, rollover, and keyboard faults.
Display60Hz vs 120Hz vs 144Hz
What refresh rate changes, what it does not, and how to verify your setting.
Audio & videoWhy Is My Microphone Not Working?
Work through browser permissions, input selection, levels, and connection issues.
Audio & videoHow to Check Webcam Quality
Evaluate resolution, framing, exposure, focus, lighting, and connection stability.
DisplayWhat Causes Monitor Ghosting?
Learn how response time, overdrive, refresh rate, and cables affect moving images.
PerformanceHow Typing Speed Is Calculated
The standard WPM formula, accuracy calculation, and fair test conditions.
PerformanceHow Device Latency Affects Reaction Time
A clear look at display, input, browser, and system delays in online tests.