Internet connection stability

[Foots]

I tether my phone to race online on NASCAR Racing 2003 season. I've had an Alltel Touch Pro and never had a problem with my connection stability. I just got a Verizon TP2 last week, and now the connection will be fine most of the time, but the connection will become unstable periodically, causing "warping", meaning my car disappears for a few seconds. Is there something different with the connection on the Touch Pro 2? Are there any tweaks I can use to make the connection more stable like my old Touch Pro? This is my only source for high speed internet that has a good enough connection to race with.