there is blatant laaaaaaaaag, everywhere, it's just not kosher for a PC game. Like I've said in another thread, I've encountered(so far)enemies skating across the ground, I've fallen through the ground a number of times too, become stuck on geometry for no apparent reason and even got teleported all the way back to the other side of a map by lag. It's not a smooth experience by a long shot. What gets me is that if it's this laggy with not as many PC gamers on, then just imagine what kind of "experience" the console people are getting with at least 3 times the amount of players(don't quote me on that ¬_¬).
The multiplayer is just a bag of fail really. I know though that IW probably won't do anything about it though since we are the minority that will buy the game, they have the money from the console guys to keep them warm instead, which is a shame. If you've gotten used to gaming on dedicated servers then the multiplayer in this game is not for you, not by a long shot, IW need to sort themselves out. I hope people hack this game and make their own servers, it would be all that could save this game really.
P.s. Sorry for being snappy, not having a good day today.