So, just installed it, started it up - mouse lag. Been trying to figure out a fix for hours but I guess there just isn't one. Anybody have any ideas or is the game just broken? I turned off crossfire, turned off acceleration (bmouseaccel) in the ini, turned off vsync in ini (even though that is supposed to break the game anyway, so I don't see how it's a fix)

SO they went to all that effort to make this huge game, but were too lazy to finish it? They were like well, it's 99% done and it's broken, but we're too lazy to finish the last 1% even though we just worked to do the first 99%. Huh, strange

Oh well, guess back to Battlefield 3

Oh, and regardless of whether I'm wrong, it's still pathetic that there are mouse problems in the default game

You have failed to provide any information that can be used to help you. For instance, you say lag but do not say what you mean by it. Also, turn V-Sync back on.

The game is fine for the majority of players, so your rant is baseless.