But is possible that from many months until now become impossible use navigation on 955? When I try to navigate to a point like city, shop or something else, the watch need too much time to calculate it (5-15 minutes) and sometime I have a message like "an error occour to calculate track" and go back. It happend with two different 955 (one solar and another no) and totally update, with every type of options about track, quality map, place that I choose and other. Why Garmin don't find solution? Some time ago was good, so is it possible calculate track with this watch. Problem is maybe the map: there are another alternative?