Has anyone experienced this :
uploaded a track on ka72 a week ago, top speed was 34.77
uploaded it again yesterday and now top speed is 49 knts !!!!!
Checked on the google map overlay, the red segment is not on the same location as the 34.77
It is indeed where I was trying the slingshot technique and I was certainly blasting (flat water) but 49 knots !!!


how could a gps track change in a week ?