Missing swim lengths

Just wondered if anyone has found an issue with the 5+ missing often missing lengths? Lost around 150m last night on 2k 25m pool swim.

Currently using standard swim app and either pause (start/stop) swim during breaks or use the lap button, both seem to do same thing.

May need to use the drill function in future
  • On average, I used to lose around 100m on a 2k swim on the Fenix 3. Sometimes more if I was doing a drill that didn't involve the arm with the watch. It's looking for that push off from the wall to detect a new length but then you might be risking foot cramps from being too forceful!