Samsung Galaxy Watch and Swimming Pool

[thecolonel62]

I have a problem with my GW4(1 month old) in swimming mode whereby the times of my laps are just simply wrong. I've studied it and I've come to the conclusion that it's not recording ALL of my first length. Maybe it starts counting half way through first length and therefore it gives a much faster time when in fact my 1st length is almost the same time duration as the following nine lengths. Anyone else have this problem or do they have a fix for this? I'm using the 3 2 1 go feature in the app
Also does the auto detect workout feature really work? Can I just go ahead and swim and it will record accurately?
TIA

Sent from my M2007J20CG using Tapatalk