Ridge Racer's gameplay is really smooth, and while playing multiplayer, you do not ever see any lag (or screen skipping). BUT, for some reason or another, there seems to be a certain delay in the game. For instance, if I'm speeding past my opponent, he won't see it on his screen until a few seconds later. This means, there are certain times during the game where we both can be in first place. Additionally, sometimes I purposely bump my opponent but on their screen, they have a clear path.
I'd give the game a 1 out of 5 for multiplayer - as the races never reflects its true state... leading to confusion in real-time.