Fix controller stick drift at home

Rest the sticks and read the number

Connect the pad, leave both sticks alone, and press Check stick drift. A value above 0.08 means the stick is reporting movement while it sits in the center.

Raise the in-game deadzone only after you measure it

A larger deadzone hides small drift and also hides small real movements. Use the number from the test, then set the game just above that value.