After having 520 for about a week and messing around loads with navigational side, have finally got TBT to work via Ride with GPS .TCX files.
If I use regular TCX garmin tells me to turn either directly on turn or too late. I see RWGPS has a function for TCX export to enable "Notify before Turn" which I set to 60M and does the job. Only thing is it seems like I have to pay $6 month to get it functioning properly?
Slightly annoying!!!
Any ideas how to write TCX files with this "Notify before turn" without paying. & Yes I tried Bike Route toaster. But it adds another course point so you get 2 cues to turn, which is a bit annoying, and can't get ride of Virtual partner on BRT, which I also find a PITA.
Cheers