robin1979 wrote:It's because of the crappy GPS receiver in mobile phones probably. Since I have the TomTom carkit (with an external GPS receiver), I haven't had that problem. Actually, the improved GPS signal is the only reason I bought the TomTom carkit. I don't use the other functions - call me a Waze addict for getting it just for that reason...
Far be it from me to disagree with the great @robin1979, but I think you have misunderstood the issue.
It is not just Waze recalculating when you go off route. It does that, it fails, it tries again, it succeeds, it fails, it recalculates...it is not doing anything but recalculating routes, giving you a good route, you're on it, and 300m (at best) or instantly (most likely) it recalculates again. The route calculation is correct - usually you only get to see the distance and eta, and then it recalculates again before the map display is updated. It isn't the roads or the GPS signal. I happens on good roads, and the GPS signal is solid. I'm sure it's the Waze servers, or my talking to them.
But I've only seen it a handful of times, and it has always coincided with a Live Map update.