Start with evidence
Run the tests that separate the likely branches
Controller Stick Drift TestMeasure resting stick offset to identify possible stick drift.
Run →Controller Dead Zone TestInspect how far a stick moves before input appears.
Run →Controller Stick Jitter TestMeasure small unstable changes while a stick is held still.
Run →Controller Circularity TestTrace stick range around the outer boundary.
Run →Decision table
What the observation changes
ObservationWhat it meansNext action
Center offset repeats wired and wirelessConnection mode is less likely; calibration/device state moves up.Follow 8BitDo calibration/firmware guidance and retest.
Issue appears only wirelessRadio/link path is more likely than the stick sensor itself.Test wired/2.4G placement and interference.
Browser center is stable but one game driftsGame dead-zone/mapping is higher priority.Reset/check game and Steam input settings.
Sequence
Work from reversible checks to escalation
- 01
Record center offset before changes.
- 02
Compare wired and wireless modes.
- 03
Check firmware/Ultimate Software support.
- 04
Retest after one change at a time.
Likely areas
Keep these branches separate
CalibrationFirmware/profileWireless interferencePhysical stick/sensor issue
Repair boundary
When to stop changing settings
If drift persists across systems/modes after official calibration/firmware steps, use 8BitDo support.