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Originally Posted by BooDaddy

I have to disagree. The position update is "jumpy" on my unit. Thats the lag I am referring to.
I will try to make a vid in the next day or so showing both the Nuvi and my Mobile XT unit side by side. The Nuvi updates its postion several times a second, and makes for a nice smooth moving cursor. On the other hand, the GPS chip in the TP2 updates position every 2 or 3 seconds, or every 30-50 feet, this makes the cursor move in a "jumpy" fashion, and when your walking its more noticable.

When your using Google Maps driving, you can see the cursor "jumping" up the highway instead of smoothly moving. Thats the lag I am referring to. CoPilot 8 Live isnt as bad as most, a it extrapolates your position based upon your speed and last location in much the same way that the modified driver over at XDA does.

I don't see the jumping at all. I have seen it over the years when you have a marginal lock, tall building etc. and I understand what you mean. Mine is smooth. Like you said I'm getting several updates a second with google maps.

Use google maps if you can so we can all compare apples to apples.

There is probably a GPSTrace app we could show exactly what is happening on each others phone.