Aircraft is Drifting

First thing you will want to try is power cycling the aircraft.
Potential Propulsion issue
- Check all props are in the correct positions
- Check your motors physically for temperature differences or grinding.
- Check Motor Data for differences.
- Check for any imperfections in the arms or a loose locking handle and loose bolts.
Aircraft is going in and out of Attitude mode.
- Check the connections from the RF Module to RTK Modules

- Replace RTK Modules
- Replace RF Module
Aircraft is having barometer drift
- Do IMU Calibration
- Replace Barometer
- Replace Aerial Electronics Module

A list of things to check if your aircraft is experiencing drift.