Actually more like 12-13 minutes. I have tried 3 different makes of earphones, none of them bargain-basement, exactly the same thing. Re-pairing the earphones or factory resetting the watch did not help.
Today I got a replacement 265 and it has the same issue. I’ll have two more models of earbuds delivered tomorrow, and if the watch does not work with either of these then I guess I’ll be looking for a different watch.
The problem does not exist with my Sennheiser Momentum 4, but that does not help for running. Support do not help, they simply state that they cannot test their watches with all earphones. I did find one other person with the same issue with a 255 (https://forums.garmin.com/sports-fitness/running-multisport/f/forerunner-255-series/364223/headphones-cutting-out-after-ten-minutes-or-so/1799089#1799089).
Anyone else had this issue? Anyone have a solution?
Thanks!