I did a flight today and lost signal (too far away). Not a problem, as according to the manual failsafe should kick in within 3 seconds and the aircraft should return home. It however took almost 4 minutes before the failsafe kicked in. I had "no signal" and could not control the aircraft - no speed/altitude indicators were available. Any reason why this could take so long? Was there some remaining connection that I could not see that prevented failsafe? Should I switch off the RC completely when it takes too long? P3 Pro with firmware 1.1.9 and DJI Go 2.30 (iOS).