Is there a set speed for the P3 to RTH at? Does it use full throttle or a little less? I've used RTH a couple of times to test but they have only been short so haven't had time to work out if it used full throttle so to speak. I remember using the RTH feature on my P2 once when I hadn't noticed the battery running so low so initiated the RTH but it was fighting a head wind on the way back and seemed to be standing still. Panicking about the battery I took control and got it back much faster myself by giving it full throttle.