Screen the controller before remapping
Run every button, trigger and stick through the live map. A game mapping reset cannot repair an input that never reaches the browser.
If all inputs appear, record the exact game mode and platform where the symptom remains. Menu, match and accessibility layers can use different mappings.
Repeatable checklist
- Press every button once
- Sweep both sticks
- Record exact game mode
Handle intermittent behavior as a reproduction problem
A controller that disconnects or delays occasionally needs a longer controlled comparison. Keep the same game action while changing only cable, USB port, wireless distance or another known-good controller.
Browser timing is not a complete gameplay-latency measurement. Use the fault tree to document scope and connection evidence without naming a cause too early.
Repeatable checklist
- Preserve the original setup
- Change one connection variable
- Repeat the same duration
Game-specific boundary: Controller mapping and game modes can change by platform and release. Confirm the current in-game layout after hardware screening.