After start, it often gives me erroneous directives to turn off the route I have stored. If I simply ignore these directives and go straight, it will revert back to the correct route until sometimes later, when it does the same over again. If it wasn't for the fact that I know some of the routes beforehand and simply ignore the directions to turn, it would lead me the wrong way.
It doesn't seem to matter how I set up the route, i.e. directly on the satnav or via mydrive and upload to the device. The behavior is the same.
My settings under Route Planning are:
Suggest destinations - Off
When a faster route is available - Don't ask me
Always plane this type of route - Avoid motorways selected (all other deselected)
Avoid on every route - all four switched On
What can I do to get it to stick to the intended route?
Best answer by Ste7ios
If it was static it would be a track.
So yes a track it's like a recording that you can replay later... There's no calculations.
Note that a track doesn't have any waypoints. It only has a start and an end...
On the device no, you can only design routes.
If you need the versatility of a route but you want to guide the GPS to a specific course, you may use software like Tyre that will make your life easier by adding the necessary (intermediate) waypoints. You may design a track and then reduce the number of waypoints automatically. Don't forget to check that the route is ok on the device. Different maps (Google & TomTom) and different route calculation settings may affect the final route...
This is what I do.
That may clarify how things are:
Of course there are always things that may improved...
Also take a look at Tyre's manual: http://www.tyretotravel.com/manual/