I had a chance to test the updated patch and try combining two clips recorded in the Canon AVCHD format. Although SVRT still did not work, I was able to rerender the clips at 24 MB/s as MPEG4 files. I tried playing the rendered files on Windows Media Player, VLC player, Splash Player, and in PD. I found that smoothest playback was on the Splash player, but I noticed a slight amount of distortion along the very bottom edge of my video. Splash uses NVIDIA pure video for hardware acceleration and converts interlaced video into progressive. I tried rendering these files with CUDA turned off in PD, but I got the same results.
In WMP and VLC there was no distortion along the bottom edge, but the video itself was interlaced and choppy. Neither one of those programs use hardware acceleration so that may explain the choppiness (although my CPU usage was only 34%).
In PD, the playback was smooth and looked fine for preview quality.
Q9300 2.5 GHz
4 GB Ram
Nvidia 9800 GT