I got my watch a few weeks ago and went for a swim. Firmware 3.10.
It was like magic! Each time I finished a length it had counted it and added distance. When I got home I could see stroke, SWOLF and distance.
Really good tracking and motivation.
Updated to 4.2
During the swim the distance looked really high. I then realised that it was adding distance as I watched during a rest. It jumped 210m in one go, then I saw the numbers start to count up like a clock!
When I hit save, the distance dropped dramatically and when I looked on Garmin connect the distance and lengths were close to what I did, with some errors.
This means tracking seems to work OK but in activity, display is out.
I then tested in the living room, doing 'fake' strokes!
15 seconds or so to count a length.
All was OK up to 15 lengths, then it shot up to 31. I hit stop and it reverted to 15 again.
Currently rolled back to 3.1 and the 'fake' activity seems to track OK. Not had a chance to check it in the pool yet.
I have filed a report to the Beta team, but just wondered if anyone else is getting good results? I have seen other reports of oddness with recording and am trying to work out what to do....from install firmware to send the watch back!
I hope it's working for you, but I feel like a guinea pig at the moment - here was me thinking the 5 plus would just enhance the 5 and all bugs were ironed out before launch.
Would love to hear other experiences.