Altitude Test with Emax NightHawk 250 DIY Quadcopter Pt201:42

The same as the last video really, just facing the other direction, The first few flights with my new DIY Nighthawk 250 Quadcopter, In this video i was having a play with height, and got scared when it got hard to see….Going up was fine, but coming back down it kept getting this weird wobble thing going on, it wouldn’t stop unless i powered out of it… If anyone had any ideas as to why and what i can do stop it it would be very much appreciated, Cheers for watching, FPV on the way soon, so wont have to worry about loosing sight of it 🙂