Looks like a video driver problem. What version are you using? Looks like a very sweet setup, btw.
Haven't encountered this myself with material from the same camera.
Yes - modeled this after the dream setup you detailed earlier this year (at least Mobo and Ram).
Video driver - I'm using 306.23 at the moment (off EVGA CD that came with video card), but have tried several up from threre to the latest with 306.97. All the drivers are giving the same issue.
The playback isn't laggy at all - just the odd "scan line" (or a better description may be that a multiple lines of the video get shifted horizontally a couple pixels). The rendered pieces that are showing this in premiere are playing fine out of premiere, as well as the orginal clips.
Agreed that it sure seems to be a driver issue - will try installing some others and report.
I'm using the 310.70 driver with the same EVGA GTX 680 card and have never seen this scan line you describe. Might be worth trying that driver from the nVidia site.
As well as a specific reference to 306.97 in http://forums.adobe.com/thread/1084197 (concerning a different card) I remember a mention in another message, from an Adobe staffer, that problem reports for the entire 306.xx series had come in
So, try Harm's idea
This past week I was helping a woman with this same problem. Here is what she did that fixed the problem. She turn on Aero in Windows 7. Before that she had it turned off and was getting the line in the middle of the preview window. For some reason, turning Aero ON fixed the problem for her. You might want to try that.
+1 for Dave.
I had Aero disabled, turned that back on and (insert drumroll)....problem solved!
Still running driver 306.23 but running stable/fast/smooth so not messing with it