Yesterday my drone lost GPS almost immediately after takeoff. The Drone immediately climbed to what I expected was the return to home altitude because it disconnected from the controller. I'm not really sure about the altitude but that's my best guess. Then the drone started drifting and I had no control at all, the drone then hit a very tall tree and crashed. After looking at the flight logs I was shocked to notice that the drone had been loosing GPS signal several times over the past several flights. Can someone please help me understand what's going on.