For the most part it's been pretty good, but if you set it for certain locations, like near certain docks or in certain parking lots, it takes you to the main entrance. There is then a building or a bay or a giant freaking wall between you and your destination, and you have to figure out how to get around. Usually not a big deal, but it's been a pain in the ass for certain timed objectives when you only have 20-30 seconds of spare time.
I still don't know how to properly get to the cockfight in North Point. My waypoint just takes me to a ferry terminal, then I jump into the water and swim the rest of the way.
