My rover does not go straight line

When my rover start from home of waypoint, it does not go straight line following the waypoint. E.g., between waypoint 1 and 2, it always runs 1 matter then stop, and try to recorrect direction. Any advice, thanks

Lumono,

It’s best to upload a dataflash log. That way we can check whether it’s the steering controller, navigation controller, issue with a sensor, etc.