Passmark Keyboardtest → ❲Real❳

and select "Scan for hardware changes" to rule out driver glitches. Physical Inspection:

Some keyboards can't handle multiple simultaneous presses. Use this to see exactly when your hardware starts "dropping" inputs. Measure Input Lag: passmark keyboardtest

Displays and Windows scan codes for every press. Measures keyboard repeat and depress times in milliseconds. Calculates potential mechanical typing speed . and select "Scan for hardware changes" to rule