I have a GTX 770 and i5 4.7Ghz, 8GB ram and W7 64bits, more than overkill for this game, I can play it with a stable 125 fps for hours, no problem, all maxed out, even the dynamic glow thing. I just spent like 6 hours trying to figure out wth happened because my game wouldn't go past 60fps, it was at 60fps or 85fps for 3 seconds, and then they would drop to 25ish for a quarter of a second and then go back up. At first I thought something was wrong with my graphics card, I tried changing everything in mb2, nothing worked. Checked the temperatures, it was fine. I didn't install anything that I know of. Uninstalled and installed JKA again, nothing. Unparked the cores from my CPU, nothing. Then I realized the stutter problem wasn't from the game, it happened on the desktop. I just clicked and dragged my mouse and created a box and moved it around the screen and it stuttered even with that, I was like wtf. But I also went into CCleaner, startup, and saw a bunch of programs there, probably malware, that weren't supposed to be on the startup. I disabled all of them. turned off the pc. I thought it was the HDD, it looked like it. I unplugged and plugged the sata wires. Cleaned it up (wasn't all that dusty either). Turned on the pc. the stuttering was gone. either there was something wrong with the wires from my HDD (which I doubt, because they weren't lose), or one of those shady programs on the startup was causing my computer to stutter. Maybe you have/had a similar problem. I'm leaving this here in case anyone else ever comes up with something like this. Beware if the stuttering happens on the desktop, it was minor, but it was there..
