Dual Xeon E5-2620
Dual Quadro 4000
BM 3D Extreme
CS6 Production Suite with all patches including Adobe Labs Epic patch
When playing back Epic footage the all cores jump to 100% when viewing resolution is set to 1/2 and the image just stays frozen if set to full resolution playback. Enabling or disabling the Rocket card under Source Settings seems to have no effect. In CS5.5 the CPU would almost be idle during playback with the RR doing all of the heavy lifting. CS6 doesn't seem to be utilizing the RR at all. RedCine-X and Resolve are using the Rocket card without a problem (CPU load with RedCine-X is about 8%).
Might be related to: http://www.reduser.net/forum/showthread.php?83694-Premiere-CS6-anything-but-smooth-(6-0-1-made-it-worse!