More on my Pro Controller
I turned off video cache in settings and now my controller is doing great .Have tested it with same Mavic 3 and worked great on 5 flights of over 35 mins each. Maybe this will help someone with same problem.
RC will go blank even when drone is very close. Never know when it will happen.
Drone has returned home each time .But very scary to suddenly lose contact with drone . New Scandisk Exctreme pro SD card in RC and Mavic 3