I've found the Android version gives significantly worse directions then Maps on a PC, or even my TomTom. I'll have to give it a try again and see if this helps.
As an example, if I use my phone to navigate from my apartment to work, it takes me down a road where there's a redlight every quarter mile, as well as heavy traffic during 75% of the day. If I use my TomTom or Google maps on my PC, they take me down the highway, which is about 2x as fast as the route my phone tries to take me. I've had several people tell me similar things about the Android navigation.
As an example, if I use my phone to navigate from my apartment to work, it takes me down a road where there's a redlight every quarter mile, as well as heavy traffic during 75% of the day. If I use my TomTom or Google maps on my PC, they take me down the highway, which is about 2x as fast as the route my phone tries to take me. I've had several people tell me similar things about the Android navigation.