A bit it seems, people are taking their time dying. Seriously, I ran a guy over and he didn't die until, like, two seconds after the fact. Hit detection is spottier too. I'm playing on a new TV, though, so it might just be me.
Hmmm I haven't had too much trouble. But that might just be luck who knows. This game is notorius for lag though. there is a lot of shit blowing up and going on.