I recently repeated a test on the same open water swimming route I had done before, where I had previously tracked the session with the watch on my wrist. This time, however, I placed the watch inside my swim buoy instead of wearing it, and the GPS tracking was flawless — very accurate throughout the session.
This confirms that the Vertical(at least in my case) performs significantly worse when it’s worn on the wrist and goes in and out of the water. Some deviation is always expected in open water, but the level of inaccuracy I’ve been seeing lately — especially after the most recent firmware update — is far beyond what I’d consider acceptable.
The only downside of placing the watch in the buoy was that I couldn’t record stroke count, SWOLF, or heart rate, since I didn’t have a second watch on my wrist. I was just wearing a basic Casio for time / stopwatch.
-That’s the end of my tests (after soft reset, hard reset, protocol sequency for best GPS, correct swim technique, etc …)
i hope an GNSS upgrade in the next software update.
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