Comentario oficial
If you are using Terrain Awareness and you are in rough terrain it could be chewing through the 100 waypoint limit really quickly.
Or you could have a flight timer set in the app.
But... after looking at your flight logs I can see the issue is actually that you are using the STI (Stop To Image) setting which uses a waypoint for every imaging location. Since the aircraft can only be programmed with 100 images it is going out and doing roughly 100 images at a time.
Unless you have a specific need to be using this setting you shouldn't need to be using it. It comes in handy when you need zero smear in your images but that is for some very specific cases that are not likely what you are trying to accomplish. Just turn that setting off and you will keep flying much faster.