Today i've to discharge 2 batteries to 50% to keep them stored for some days and i dedicated my whole 2 flights to try to improve gimbal horizon issue. I flew on the seaside to have the better place where to check what i'm doing. I think that at the end of the 2nd flight i reached the optimal and maximum performance achievable with our gimbal. First of all perform what written in the exact order: - Take a flat small square surface (wood or plastic are good) - Put the tablet somewhere and level it paying attention to be leveled horizontally, vertically and diagonally. - Then put the phantom in the fridge, wait 30 minutes (to avoid long time warm up) and bring it outside on the level tablet you prepared before - Switch it on and perform immediately an imu calibration. - When imu finished make signs with a pen where the phantoms legs are (on the corner is ok) on the tablet. - Take the phantom and perform a compass calibration (thats why i advise to do it outside, houses are full of interferences). - After done compass calibration put back the phantom on the table in the exact position where it was when performed imu calibration. Switch it on and check the mod value, it should be 1500~ (+ or - 15-20 is ok) - . If it is, with the bird always on the table in the same position, perform gimbal autocalibration. NB: Before to perform gimbal autocalibration be sure that your gimbal offset in dji go is set to zero. After done this, i noticed a good horizon when fly slowly that keep stay leveled but when flying aggressive i noticed the horizon becomes tilted and took a little bit of time with the bird flying slowly to recover and become again straight. So using DJI GO APP in the gimbal advanced settings i changed Gimbal Pitch from 50% to 100% and Gimbal syncronous follow to OFF I've not so much battery at that moment to make deep test but within the nexts minutes of flying i noticed that the gimbal recover faster and was straight even when flying and turning aggresively. If someone want to try and share the results is welcome.