CS4 AVCHD Playback problems

[Adam Chesbrough]

When you say that you now have no HD shutter does that mean that you are able to overlay multiple AVCHD clips and it streams correctly? I am able to stream the video but when I try and do any sort of CPU/graphic intensive effects the video majorly lags.

Dell XPS 730 H2C
Quad Core Duo QX9650
Dual ATI 3870X2 Graphics Cards
6 GB RAM
Dual 1 TB Harddrives (RAID O)
Windows 7 RC1 Ultimate 64 Bit