Game is unplayable on my PC as well. As other mentioned the game sound kind of keeps looping and game runs like my PC could barely handle it performance wise. My set up is: Windows 7, i7 3.2GHz, GTX680. From what I've read so far it seams the game has problems running on high-end computers and I haven't found a fix yet. Be careful before you buy, as many people have the same problem.
