I've noticed that destination tags (road sign indications) usually show far too early. That is, the next destination tag shows as soon the the previous is passed. However, quite often there are several turns (without destination) before the next one is up. That's very confusing.
In other words, I'm driving along and the app shows next destination 'City Centre' turn right. But before that right turn I still need to turn left and go through a roundabout.
My suggestion: only show destination signs immediately before that turn comes up. If there are other turns before or if that turn is more than 1km away, don't show it yet.