In general, you'll see a lot more negative feedback than positive, because people for whom everything works fine for don't go out of their way to say "Hey, this game is working fine for me, just thought I'd let you know." If you read the forums, you'd think the game was a laggy, buggy mess, but as far as I can tell, it works fine. I've gotten the disconnected from PSN error exactly once in the 3 weeks I've been actively playing the game and haven't had any issues with lag at all. Even the freezes on the loading screen only seem to happen once or twice every couple of nights, and while I'd like that to be fixed ASAP, it's not something I care about enough to complain about on the forums to anyone who'll listen.

Ant that's entirely possible. It's also possible that the problem is on their end rather than an issue with the game. I generally only squad up with a handful of IRL friends, and for the most part, we can play for several hours straight with no major issues. Occasionally one or more of us will get the loading screen bug, but that's it. Aside from the guy who's on garbage internet and can't even stay connected on Skype.

Could be both. I find it unlikely that an issue that some people encounter seemingly all the time, while others rarely encounter it, if at all, isn't due. at least in part, to something on the user's end, whether poor internet, the model of their PS3, the number of chat channels they have open, or something else. It seems likely that it's something the user has some degree of control over, otherwise, it's something that should be affecting everyone consistently, instead of only 2/3 of the playerbase.