The game never ran amazing, but it ran surprisingly smoothly if i put it on everything lowest settings. But I just installed a new 500w Cooler Master PSU (old one was a 200w generic) and it seems to run slower and lag more. I know I'm not imagining it. Here's the only thing I can think of that could be causing it. When I looked at my motherboard, I was surprised to see that it took a 24-pin, but the PSU had a 20-pin plugged in, leaving the other 4. The new PSU I got was a 20+4, so I figured I'd plug in the whole 24. But the thing was, I plugged in the 20, and the extra 4 would seriously not fit. So I figured the old one had 20 and I just left it. Now this is happening and I'm wondering if that's the problem, because my graphics are integrated. Thoughts?