Frustrated with GPS lag

[grandpanda]

My sprint Tp2 has been having this GPS lag problem. At about 40mph, my location is always 100ft behide, no matter which program I use, Igo, Google Map, Tomtom... I tried all the tweaks, registry hack, deleting logs, GPSgate etc, none of them worked. The lag is worse than my previous Touch Pro which lags a little too.

Seems there are zero-lagging TP2 out there, I wonder if I should let sprint replace this one...