when flying on Friday, I noticed that the drone lost approx 2m altitude and then gained it again repeatably when yawing. When I say repeatably I mean that the loss was always at a certain yaw angle, and the gain at the 180 opposite. I have also noticed that sometimes when flying at only 2m if i drop off of a ledge, the drone seems to drop down to 2m from the new floor height. My ideas with this are: 1) I was just on the limits of the Sonar range when yawing, and perhaps on the border between different height floors, although I tried this and it happened in several places. or 2) The sunlight affects it. It entered into the left side from a 45 degree rearward angle each time the drone lost height. It was gained at 180 degree yaw from the "death" angle. I know the older Nazas had issues with bare chip dies being used that allowed them to be photo sensitive, I also see that the electronics in the inspire seem to be covered and shouldnt have the issue, I was flying a naza v2 the other day, it was worse that my I1 experience, but very similar Ideas?