The copter flies very good in calm winds. RTL, loiter, alt hold all perform nicely as well. In auto mode flight if their is much wind at all during forward flight between waypoints it will start bucking. Sometimes it gets past it but yesterday I think it almost flipped over it got so bad. Now the circumstances right before was I hit my Geo fence (not on purpose) I had just had it on and tested it. So the fence was hit and RTL was initiated. My Alt for the planed mission was 40m and my RTL Alt is at 30 so the copter started coming back towards me and was coming down some in alt. It really started pitching and rolling so I flipped the switch to stabilize mode and it settled down nicely. My question is regarding tuning and what the parameters to tune to help with this situation? I am attaching the log file and it is very obvious when it started the major bucking. I believe my interference levels are acceptable. Also in the logs when I graph the flight, when I switched from auto to stabilize my middle position on the switch is loiter so that is why you see the mode go from auto to loiter to stab.