Polygon Grid Speed Settings

Can anyone advise me on the settings to fly a Phantom 4 Pro using a polygon mission. I am flying at 55m with a 75% overlap. Does the app automatically control the speed or do i need to adjust the speed on the app manually? The terrain is flat and open. If i need to adjust the speed manually what would be the recommended speed?

Regards

Colin

A post was merged into an existing topic: Drone speed for optimal capture?