I wanted to use the Way point mode for a video that I wanted flown around 10 ft. I tested this at my home and set the way points around 10 ft, I just had 2 way points for this test. My C1 switch would not set the 2nd way point so I just press "set way point". I then went back to the other side of the #1 way point to start the test run. I pushed apply and my drone went into a fast descent, I have created this 3 times, the software works great at 60ft, but somewhere lower it always has this bad problem. I have not heard of any minimum altitude to use this feature.