Hmm. I tried .tif, BMuncompressed 10b RGB, and Uncompressed 422. and none of them played back perfectly. the BM codec worked a little better.
I also tried some dnx encoded shots that worked fine on another computer using these cards (minus the pci ecxpander) and here I only get 17fps.
any other thoughts? I didn’t try DPX cause I couldn’t export them from FCP