Either go with a Pentium G_ / Low end i3... or Get a better APU + a 6670 for hybrid crossfire
It's called Dual Graphics, it works differently from crossfire. It's had problems for the longest time, most notably intense stuttering, though it never had the runt frames issue. Then again, it was borderline nonfunctional as far as increasing frame rates went, combined with the stuttering it was never worth it.
The last update may have helped/fixed it but I kinda doubt it.
Every time I try to go where I really wanna be it's already where I am, 'cuz I'm already there XBL, PSN, Steam, Origin, BSN, GFAQs, MC: PhilOnDez