UNDERSTAND THE NUMBERS
Stick drift & deadzones
A stick reading, a game’s response and the physical condition of a controller are related, but they are not the same measurement.
What is stick drift?
Players often call it drift when a game responds as though a stick is moving even after they release it. Small reported offsets can have different effects depending on the game’s deadzone, sensitivity and response curve.
What does a deadzone do?
A deadzone treats a region around the centre as neutral. Increasing it can suppress small unwanted movements, but it also means a larger initial movement is needed before the game responds. It is a setting tradeoff, not a physical repair.
Why readings differ between tools
A browser sees the data delivered through its input path. Firmware, drivers and remappers can transform that data before it reaches the page. A game can then apply its own filtering. Always record your connection and profile when comparing results.
Run a repeatable resting test
Place the controller down, move and release each stick, then measure for ten seconds without touching it. Repeat a few times. The mean describes the average radial offset; the 95th percentile is a value at or below which at least 95% of samples fall; the maximum captures the largest sampled offset.
What should you change?
First confirm the symptom in the affected game. Check its deadzone and any remapping profile you use. If the problem persists across known working connections and applications, consult the controller manufacturer’s calibration, service or warranty guidance. A browser graph alone cannot identify the faulty component.