Flew my stock setup Mavic Pro, just a bit past 3 miles away and 3 back on a flight next to the Gulf. Light wind. Flew until it gave the turn around or you will not make it back message. Made it back with minimum battery.
I flew exactly 3 miles down the beach before RTH came on due to battery. I had 100% trans signal still, and 77% camera signal. Landed with 2 minutes left. Very pleased and impressed.