Yeah, it's weird. In all of the years I've been playing PC games this is the only time I've had one not work at all and not been able to easily fix it myself, let alone have every solution that tech support has offered up fail on me as well for nearly a month. The strangest thing is that it runs the same on the lowest settings as it does on really high settings. I got no improvement in the frame rate at all when I dropped them all down, and no programs seem to be interfering with it.

Minor edit: I think my favourite part though was when the 2K rep told me flat out after a couple of weeks of messages back and forth that there was nothing else they could do. Mentioned that if they couldn't help me I'd have to try and see if I could get a refund through Steam and their tune changed remarkably quickly.