Similar issues to those outline exceptin other threads but my issue is for OW swimming. I've read all the advice on improving GPS tracking but I'm not sure tracking is the issue so much rather more a software issue.
I swam last night with it on my wrist (a new fenix 5s - recently replaced a fenix 5s that does on me that had no tracking or distance issues at all). At the same time a palSwamwith his vivoactive 3 in his tow float. I went slightly further than him but no more than about 200ms.
His distance is pretty accurate whilst mine is about a Km shorter. Comparing our traces in the map there isn't much difference, except mine is full of perfectly straight lines where I'm guessing the GPS is joining the dots between where I was and where I've been. But that doesn't explain why the distance would be so out of whack. If the GPS can estimate my route pretty accurately why is it getting the distances so badly wrong? Is it not adding on the "guessed" sections of my swim where I lost signal to my overall distance? It's missed practically half of my swim.
My old fenix 5s seemed far more accurate and my swimming style hasn't changed in that time. It hasn't to be a software thing otherwise how could our maps on connect and strava look so similar but the distances look so different?
Definitely not what you'd expect from a premium watch nor does it explain why one fenix 5s would work well but another so badly.
You'll see both my route and my friends route below. How similar the paths are, bar me swimming further out to the point, making the 1km difference in total distance so perplexing.
