Hello
I posted time ago this issue.
My FR 245 latest update (12.10, GPS 6.6 Sensor Hub 18) measure almost half of the real distance traveled.
Time ago I made acomplete reset to see if this issue could be solved, but no way it happened.
I went for many walking/MTB/wingfoiling sessions and my measurement are awful.
Yesterday I made a wingfoil session that is FLAT, 12Km on my 245, 16 on google earth
Two days ago I went for hiking trip, 14Km the followed track, 7.14 km my 245, 15Km a phone of a friend of mine, 12.2Km Google earth.
What happens with this device?
Thanks