Wow, what a letdown. Coming from an ATT TP1, I was looking so much forward for the lag to be fixed in the TP2. This morning on my way to work I tried out iGo, TomTom and Sprint Navigator and all of them had about 2 seconds of lag (Sprint Navigator actually was the worst with 3-4 sec lag). I don't want a Blackberry nor an iPhone nor a Pre. I want a fully functional Windows Mobile device! I am so fed up. My ATT Tilt GPS was working flawlessly (that was 2 years ago). On XDA forums there is GPS fix cab but it not recommended for CDMA devices.
http://forum.xda-developers.com/showthread.php?t=553094