Alot of people on my friends list have had alot of lag issues since the new version came online. I haven't had too many problems atleast more than normal but I figured I'd put it out there for people who do not yet own the game and are wondering if it is worth it. I have always had problems getting people in games and lag. Other than that game on.
P.s. Unless the lag is just so overwhelming you can't play then get a diffrent game, clean your disc, upgrade your internet or someting but the game is too fun to give up.