I bought an Edge 530 not so long back and have used it succesfully several times to follow a preset gpx course that i (eventually) managed to load onto it from Komoot but when I tried to follow a mountain bike course recently around Yorkshire and was having horrendous issues with it. When following the trail the unit would regularly keep telling me to do a u-turn even though I had been following the directions on screen and at one point which ever direction I went in it kept either telling me to u-turn or that I was off course - exasperating and I have no idea why ? Someone suggested this could be a gps issue ?
As well, In order to follow a course e.g. an MTB course, do you have to first set the activity profile to a matching setting e.g. mtb in order for it to work properly or is this irrelevent? I'm not really sure what the activity profile does as such.
thanks
chris