I noticed when flying my P2 today that it drifted downwards and upwards and that i had to counter its motion by giving more thrust or decreasing the thrust when it wanted to go up. This didn't happen all the time, at times it kept itself leveled on the same spot, as it should. Its the first time I'm flying this used P2 so I'm not sure if it has been like this earlier also. The thing is that there was about 7-8 m/s winds and wind gusts of about 11 m/s at the time of flying, but shouldn't the P2 have been able to handle the actual winds that were present at the time? It also encountered a bit of side drifting, but the vertical drifting was the most noticeable. If i had not increased the thrust it would have descended into the ground, or at other times continued to fly high up in the air. I was thinking if it can be that the gain settings are not at its best, even though i asked earlier on a forum about my gain settings which is, Pitch: 125, Roll: 125, Yaw: 120, Vertical: 140, Attitude: 260, Attitude: 260, which they thought was normal values for the P2? Im using a H3-3D gimbal and a gopro 3 on the P2. I did a compass calibration on the flight spot before i began flying, and no power lines or towers near the site, and of course i waited until the P2 had a GPS lock and the green lights flashing before taking off. This occurred when i flew in GPS mode, i didn't test any other mode. Also the IMU calibration values are normal. Can it be the wind that caused this behavior or is it more likely that it is the gain settings, or maybe something totally different? I would really appreciate some input and ideas.