945 not recording distance accurately when open water swimming.

forums.garmin.com/.../1153471

Mine is the same  what do u do

As noted read this thread...forums.garmin.com/.../open-water-swimming

I have the same problem since the 935 version. These watches don't track accurately open water sessions, period! I thought the problem was with my 935 so I bought a 945 and today I did a session and it tracked 20% less distance (I swim in a fixed buoys 200m course). I thought I might be crazy and went for a swim with my 920 and it tracked perfectly the same course. So I have just bought a USD 500 + watch and thankfully I didn't sell my old 920! But I am really pissed to buy a new watch and need to use the old one, what's the point? I tried GPS only, GPS + Glonass, Ultratrac, GPS + praying etc and nothing works. I do Ironman, I expect to track my sessions accurately and am thinking about selling all this and getting another brand! Have been a loyal Garmin user since the first forerunner... Garmin, can u help me ?

Cheers 

Peter 

It's an old sad story... 

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It happens with almost every Garmin devices, i have reported many times to beta teams but seems that simply they don't care about it... . I have to use a Suunto 9 for my open water swim or use distance correction with Strava.

That's just terrible. I use a previous version of the forerunner for the swim. I did a Triathlon a couple of weeks ago that I had to wear the 920 in one wrist for the swim and the 935 for the rest of the race, that's basically ridiculous! 

Sad but true.

I have just spoken to Garmin's support and they suggested me changing some settings:

1) check the version of the GPS on the 945 (5.40)

2) Change the frequency of the data sent during open water swimming:

Go to settings> System > data recording 

Change from "Smart" to "Every second".

Don't if u tried this, just in case you haven't. I will do some ocean swim tomorrow and let you know if it worked. Let's see....

Cheers

I've tried all you have written and much more with 945, Fenix 6 and Fenix 7, no way...