I agree. I do really love the game, but the performance issues are obvious and, at least for the quality mode, need to be addressed. It would be nice if the performance mode got some tweaks also, but I'm not sure how much more they're going to be able to get out of the game when targeting 60.
I would disagree, there is certainly some performance issues in both modes in the game's current state. I don't think they're going to be able to get much more out of the performance mode, but the quality mode needs to be a much more consistent 30 FPS than it currently is.