Ok broken or unfinished i can live with and mistakes i understand but a game being completely unplayable for a lot of people not so much. Also im playing on xbox so my pc's specs have nothing to do with it.
I don't count single player or challenges even though those work fine because the whole point of the game is MP.
Actually sir, the whole point of the game is NOT multiplayer. Did you know, before the 360 and PS3 people actually played games SINGLE PLAYER? Like, with a STORY! Redonkulous, I know, but it's true!
One of the big things about this game is that your character can be leveled up through Solo and/or Multiplayer, and that it easily enables multiplayer co-op to those missions. To me this doesn't imply that it's supposed to only be multiplayer, in fact I've hardly played Multiplayer since I bought it.
I guess I'll have to play more Multiplayer in order to understand what you're talking about a little better, but from what I have tried it seems to be working as intended. I really see nothing wrong with this game, I can't help but think that maybe one of us has clouded judgement. Perhaps I like the game so much and hyped it up to myself so much that it can do no wrong, or perhaps the game didn't live up to your specific expectations in one or more areas and you're judging it a little harshly. I like to take a step back and appreciate things though, and I think that's what I've done; everything they've said it would be, it is. They delivered what they said they were going to, and I expected nothing more.
Now I'm not saying that's for sure how you feel, just speaking hypothetically, but if the game's not for you then why worry about it? Trade it in for a game you would rather have. Or maybe you shouldn't have bought it right away, and should have waited to see gameplay footage to make a better decision on whether or not the game was for you.
No one's making you play/keep this game.