Okay, then I find it much more useable than the other stuff we have available to use. And why are you talking about it on the 770? It's not surprising it would be slow on such an old device.
And by 'optimized', I meant that the buttons actually are finger sized and easy to use if you are driving. Navit does not do this very well (in fact it does it terribly since navigating the menu is so bad), and maemo mapper is essentially useless to me if I ever go out of range, and the map jumps all over the place. In wayfinder I at least had voice directions.