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Why does skyrim lag with crossfirex even with 11.11b?

Ok. So I just bought another gigabyte amd radeon hd 6670 1gb card. It hyper crossfires BUT, skyrim lags like hell when I put both together. But if I run just one, it works like a charm. I've tried renaming it to Fallout3.exe, tried 11.11, 11.11b and 11.11c but none of them work either. I've even tried the alt+tab trick but that doesn't work. PLEASE HELP!
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More about skyrim crossfirex
  1. 11.12?
  2. What are the other parts of your system?
  3. Best answer
  4. 12.1a preview is the latest
    though there shouldnt be any skyrim improvements in it over 12.1 previews...

    and 11.12 cap2 is the latest app profile available...
  5. thanks a lot. My rig is 2x AMD Radeon hd 6670 1gb, core 2 quad 2.4 ghz 8gb ddr3 ram x48c platinum edition msi motherboard. I'll try out the 12.1a and see if that works. Cheers! :/
  6. Best answer selected by BrendanMatt.
  7. oh and I have windows 7 ultimate 64bit os :)
  8. Umm... It made it REALLY bright, light flickering all of the time and still just as laggy. Any more suggestions?
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