Test the combination, not only each button
A mobile HUD can pass individual touches while failing the exact multi-finger combination used in play. Recreate movement, aim and one action at the same time and watch the observed maximum count.
Use the heat trail to identify unreachable or intercepted edges. Move high-frequency actions toward reliable zones before increasing button size everywhere.
Repeatable checklist
- Test individual action regions
- Repeat the real multi-finger combination
- Inspect missed contacts near gesture edges
Control troubleshooting variables
A dirty screen, thick protector, charging interference, thermal load and operating-system gestures can all change the symptom. The problem solver changes one variable per pass and stores the result only in the current session.
Do not use touch-event timing as a direct panel latency benchmark. Browser scheduling is part of every displayed interval.
Repeatable checklist
- Repeat unplugged from power
- Clean the screen and keep grip constant
- Compare one browser or OS setting at a time
Game-specific boundary: No browser page can modify or optimize Free Fire. This workspace measures the local input surface and structures an in-game follow-up.