Calibrated at new location, Safe to fly, no nearby towers, 17 to 20 satellites... gps mode So we set a nice high 100meter rth height.... took off... tested controls... all was good and steady... ascended up to 150ft or so... flew large loop under control... no issues yet... lost video signal as we started from the wrong side of a house... got a better position on other side of house.. got video back... 5 bar radio and video connection now.......started to notice some speed even though all thumbs off of flight sticks.... problem stopped... thought maybe the wind kicked up or something so we proceeded with flight... we flew another 1000 feet in one direction... panned around and started to fly back towards home.... aircraft started to not respond to controller movements... it was doing circles by itself along the path of a large curve.... 25 to 35 mph ... we were able to compensate on right stick to get it in a somewhat stable position but there was not enough control to feel confident in the landing with trees surrounding... battery warning at 30% happens.... I try turning off the remote control and turning it back on .... rc reconnects but the dji app informs me that signal has been lost and aircraft is returning home... aircraft is out of view so I can't tell if the ascend to rth height was controlled or spiraling/gyrating .... aircraft comes back into view and appears to be flying nicely and not gyrating/spiraling.... aircraft lands at home point without damage..... two shaken up expensive aircraft owners feel like they dodged a huge bullet! So, if we post the video or the log file will that be helpful to help figure out what happened? Is this classified as a fly away? Thanks for any feedback!