Hi,
6 years later...
weird that nobody has answered in all this time...
I'm encountering a similar issue with the Garmin Instinct 2 watch.
The official documentation mentions a maximum of 50 points for courses.
However, the watch is obviously capable of much more.
(50 points is an impossibly low amount of points anyway for tracks.)
I'm talking about tracks here, not routes. For routes, you can do a lot with 50 points, but for tracks it's a ridiculous low limitation.
Anyway, my watch can manage much more than 50 track points,
BUT it removes some of them. Probably some optimization.
A couple of hundred pretty crucial points disappear from a source track with about 1064 points. (which is not much at all)
Unfortunately, I cannot rely on the Garmin navigation functionality if I cannot be certain that it will follow my carefully prepared courses.
I's also frustrating that I cannot find anyone capable of explaining how the Garmin products really works.
Even the Garmin support center they seem incapable of even understanding what the issue is.
Additionally, I don't know if there are any Garmin products out there that would perform better.
Because the documentation is obviously not correct.
Did you discover more about this ?