Are you kidding me? The game runs beautifully on my iPhone 1st Generation, and the 3G runs great. I don't think there is any lag so far except for a little bit longer loading times (on my first gen iPhone).
This is my favorite game and in my opinion the best game in the app store!
HOWEVER, I have a 3G (with OS 3.0) and mine has been a bit laggy since the first update a couple weeks ago. I get "hiccups" usually a couple times every race and it's quite annoying ...it gets real bad when I am racing against AI opponents.
And please don't try to convince me that nothing is wrong because the problem was obvious after the first update. I tried restarting my phone and even tried re-installing just to be sure. I have over half the memory storage left on my phone and all my other games seem to be running fine.
Anyone else having any problems?
Favorites: Real Racing - FIFA - Low Grav 2 - Skies of Glory - GT Motor Academy - Rogue Planet - F.A.S.T. - Command&Conquer - Tiger Woods - Jet Car Stunts - Real Tennis - Star Battalion - Seven Swords