I know that problem caused by vram on nvidia cards at arma 2, but this should already be fixed by nvidia. There was a key combination or work around, how to unload the vram on the fly without rebooting. But I don't know, if this fault perhaps came back in some ways???
590 = live with stutters as it is your dual card causing it in close work to the vram. Again I have to say my opinion: Bad technique causes bad and unefficient work!
This power setting issue sounds like the problem with ati cards, which are running only at 500mhz video mode, when watching tracks. Perhaps, this problem is now also arising for imprved power settings of the nvidia cards? Did you already delete the ubi teaser file? This forces ati's to run only in video mode.
And again: stutters with a 680 should happen, because they again have insufficient vram! See phat's testings!
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