I don't know if anybody else is been having this problem but it seems that when I fly up to 400 feet or a little more and then come back down to about 10 feet off the ground whether it's in front of me or down the road within sight, my screen shows that I'm between 20 to 30 feet above what I am actually at . I have noticed this on practically every flight of high-altitude when returning home and it makes me question... if I ever flying to different locations after a high-altitude flight because if I'm not looking at my screen to get an idea of how high I am when you coming near the ground ....I'll probably crash this thing! Any help or suggestions would be greatly appreciated.