well on my quest to improve the navigation system routing i've stumbled across the virtual speed thing in the manual. I have no run into any issues with the maps being inaccurate, in fact these have every single back trail/hiking/fireroad imaginable, but the routing has certainly been lacking. I've seen improvement as the system continues to learn but hoping adjusting some of these speeds will help.
Do these only improve the accuracy of the arrival times etc or also play a role in routing?