Hmm... that was something that I had noticed, but because I use google maps for nav, it was not a big deal. Once the newer version was installed, the traffic for Sync 3.4 was sooner (less than 30 seconds)
I'm on 21098 of 3.4 now...
if you are the same , try a factory reset, and if it's still a long delay, let the Concierge know about it... maybe they have more fixes, or can setup the makers to know it's not good for you. ?