AVCHD Disk stutters
I used FCP X to "Create Disk" from edited Camcorder files (1920x1080, 59.94fps) and the results were pretty good for a standard definition DVD (720x480), even viewed on a 50" TV. But when I send the original Project to Compressor and make an H.264 "AVCHD Disk" to burn with red laser on a standard DVD, even the Preview is choppy. I note that the 59.94 frame rate is grayed out and 29.97 is the automatic and only option. Why is that, given the source at 59.94? And does that explain the stuttering? (the video seems to pause briefly and get out of sync with the audio; a real problem recording a jazz trio!). The bit rate was 7Mbps average and 17 Mbps maximum, with Multi-pass selected. (My purpose was to see if the higher resolution AVCHD Disk was worth the much longer processing time. If not, then what was the point in recording in full HD?) I would appreciate any explanations or advice about improved workflow.
Compressor, OS X Mountain Lion (10.8.4), iMac 500GB and ext. 1TB & 3TB HD