The new navigation has a few issues, but overall is an improvement over NAV 1.0.
On one route, NAV 2.0 is a little more conservative in selecting an exit ramp, requiring more distance between the exit ramp and a destination located on the frontage road near the ramp. With NAV 1.0, it will select the nearest exit ramp. With NAV 2.0, it wants us to get off on a ramp a mile back, evidently because the software doesn't believe we can cross 3 lanes of traffic quickly enough to get to our destination. We've seen that with two different destinations.
The other issue is in route selection. There are often multiple choices for routes - and the software sometimes selects a route that isn't as intuitive - and might have greater risk of traffic fluctuations (slower traffic or longer waits at stop lights). If we ignore the recommended route and take the more obvious route, the difference in predicted travel time is often one or two minutes - not significant. Wish there was a way for the software to display several routes with comparable travel times, and let us pick...