So, for anyone interested, it seems there is a problem with the Edge 25 that Garmin are not acknowledging publicly but are working on in the background. They have known this since December 2015 and are working on a firmware fix for but have not yet achieved this. The GPS should act as a back up to a speed sensor, which is designed to take priority over sending speed readings for the device in the aid of accuracy. But it isn’t, and GPS is taking over and sending inaccurate info instead, or cutting in and out in areas of poor reception and sending peaks and troughs of readings.
That’s the rub of it anyway, for the discussion go here…
https://forums.garmin.com/showthread.php?342193-Edge-25-and-Speed-Sensor-setup-issues
I’m surprised that no one on here noticed it yet, or have they? Does anyone have an accurate on they can stand by, just interested to know whether it may be bad units or a bad design.
Cheers,
Zzz