Okay, I can't play games on this machine anymore, because it's lagging worse.
I don't know why, this sort of deterioration screams imminent hardware failure or massive OS damage.
Anyways, back to trying to figure out overclocking i7!
Last time I tried, I couldn't even make 3.6, and gave up. I know this chip is 4.0 clear, I've done it before, but I lost the settings, and maybe the chip deteriorated.
Once that's done, I'm pulling the SLI card, because it helps for SCII, but it makes the PSU squeal even at idle, and hurts all other games by causing tearing.
And then reformatting the computer.