DJI Quadcopter FPV Crash after losing video signal.

While flying my DJI powered Diatone Reptile 500 I flew to low under a tree and lost FPV signal. After losing signal a dropped the throttle to land the quad.
Equipment used:
Naza lite with V2 update
Elgae 600mw video transmitter.
Diatone reptile 500 frame