Help tuning steering

i have built a rover using a brushless SCT drives fine in manual but in auto mode it goes to each waypoint stops and moves the steering from on side to the other and just randomly stops on its way to the next way point the only way to get it back to moving is to change mode from auto to manual back to auto

Please provide tlogs and dataflash logs from the mission you were having the issues with so that we can help to resolve your steering problem.
How to capture and diagnose logs here
Please provide the version of ArduRover that you are using along with the type of Ground Control Station.