I have CS6 on a W7 x64 pc w/ 12gb of ram and a Core i7 920 cpu.
video is 1920 x 1080 29.97i from sony nxcam HXR-NX5.
encore is at default H.264 settings.
I exported from CS6 Premiere Pro both mpeg2 blu-ray and H.264 blu-ray a/v to use as a Encore including two clips for use as motion menus. The mpeg2 blu-ray Encore project renders out nicely includiong the motion menus. I wanted to reduce the overall size of the project so i exported the all the clips in H.264 blu-ray and imported them into Encore. Everything rendered out nicely except the motion menus. However, I keep getting glitches and color artifacts for a portion of the motion menu.
I have attached a H.264 YouTube HD 720 sample for you all to review.