When I switch to circle mode my drone is not able to perform the circle at the same altitude that it was at before I switched to circle mode. It either rises up or falls lower sometimes.This also only happens when I add a load to the drone(water tank) otherwise it is fine. Does anyone know why it does this and how to solve it ?
Is it able to maintain the altitude while flying against the wind at the same speed as during the circle?
Remember that flight in any direction requires some of your (maybe marginal) to thrust.
Also: post dataflashlog , if you expect help, not wild guessing.