Didn't help much. It's frustrating knowing that I should be getting 2+mh per card, but am actually getting <1.6... I hate when things aren't as efficient as they could be.
What driver are you using?
AMD Catalyst 13.4 (12.104.0.0 March 28)
I think I had quite a few issues with the drivers/cards initially, so I'd be hesitant to change drivers.