Even on a quad core video editors can struggle with AVCHD, especially 1920x1080, 5.1 surround sound, which I think your camcorder is. To get it to play back smoothly, both video and audio, try rendering the timeline by hitting the Enter key on your keyboard.
Thanks, I will try that technique!
For HD editing in PrPro, Adobe also recommends a RAID 0 (or similar) media disc. Both HD Audio & Video need a fast file transfer rate. Many get by without the RAID, but it has helped many others. Just a thought.
Also, if you have fewer than 3 internal HDD's, and some of the ones that you have are doing multiple duty, like OS/Programs, and then Project/Media/Scratch Disks, the stream can definitely be too slow to get both smooth Audio and Video.
How is your I/O sub-system set up? Number of HDD's, sizes, speed and controller type?
Thanks for the advice! There is the primary SATA 'C' drive
(750gig) and another internal SATA 1 Terabyte drive. All
drives 7200 rpm. If I installed another 1 terabyte drive and
set up in a RAID configuration would that vastly speed
Thanks for the advice! Will try when I get a chance (been
too busy to sit at my machine for awhile)