There is that one shot I like to do where the mavic looks down and just ascend full speed up while rotating the drone slowly. For some reasons, the drone would stop ascending even tho I am still pushing up the joystick. I giggle it and control comes back but it would stop several times sometimes during the ascent. I don't see any obstacle warnings, I tried calibrate IMU, compass, obstacle sensors and even RT but the problem still persists. I have the latest firmware too and I tried in sport mode as well (so no obstacle avoidance) but it still happens almost every time. I can't find any logical explanation, it's annoying I am starting to think that that drone is defective. Any ideas? Thx.