ive tried to play 3 different times, first game, "spanky" was invincible, put whole clips of a hive cannon point blank in his head. Second game, there was only one guy on, had "golden" or something in his name, so i figured, hell, ill do a one on one, only to get tpc launched at and smawed, (yes with explosive focus), so i left him to play with himself, (or go "something" himself.) after only letting him get two kills. Third attempt, there was 9 peeps in the lobby, and it was totally unplayable with lag. the three tries were each about an hour apart. my first time, in a long time, with enough time on my hands to play, and this happens.:(
I haven't had too much trouble, but I do notice that if I join through a rival/friend like XG4 or AISP then I have a bad connection whereas if I join a random search game or through someone else then I am fine. There are times when people are invisible and the such, but it doesn't last for long or I get booted. This is normal.
In PAL region, I don't seem to have any problems with lag.
I'm not sure whether it's coincidense, but I noticed that the larger your Rival/Friend list is, the more prone you are to lag / bad connection, especially when many in your list are online. It's probably because the internet has to constantly refresh your Rival/Friend list to see whether they are online.