Radar System

On the T50/T25 there is a way to tell what your aircraft is using currently for obstacle detection.

Radar + Vision is what your drone needs to be functioning to full potential. 
If you are not seeing this then look into any errors you see on radar or vision sensor. 
If Radar only, check if forward vision needs cleaned or calibrated.
If Vision only make sure all of your avoidance directions are turned on, and can disconnect and reconnect the cables.