Thanks for posting your System Information..
, and after viewing it, your PC should playback smoother then what you are describing. I have a much less powerful PC and while I do get some jerky playback, it still is not that bad.
Do you have any other applications running in the background, that might take away CPU resources? Most of us regulars here use a special
video editing hardware profile. This is a tremendous help, so that whatever editing application we're using gets as much resources as we can give it. Steve prepared a tutorial that walks you through setting up such a profile. (Ah yes another link
..
Creating a Video Editing Profile.
Before ditching VS9, let's look at the
Properties involved. You could post the properties of the video clip, (right-click on a clip, select properties), and your Project Properties (press Alt+Enter) or File || Project Properties). There may be something there that is causing VS a bunch of grief.
However I will point out that VS10+ is heaps better then VS9,
BUT the release of VS11 + is just around the corner. Knowing what already is possible with VS10+, and what a lot of people would like to see added, and with HD, and Blu-Ray, VS11+ should be a program close to that of MSP.
With that said, other video applications will probably have a similar problem with the QuickTime video, except maybe QuickTime Pro. There are numerous video formats were designed for 1 thing only... for Viewing and/or distribution,
not to be edited. With the varying algorithms that are involved in compressing and decompressing some formats, it can become near impossible to have a successful result when you try to edit them. Putting it another way... Any format can be edited, so long as you are willing to settle for poor quality, out of sync video/audio, and dealing with your program freezing, and crashing. Some of the real expensive, industry standard programs experience the same things, and sometimes with a format such as MPEG-2, which is not nearly as compressed as MOV, Divx, Xvid and MPEG-4.
I don't work for Ulead, never have, just have found their programs to be the most stable for me, and I've tried quite a few. I have an older version of Premiere, which is considered one of the industry standard applications, and I hardly ever touch it, because it is not as intuitive, and I find it less stable, and foregiving as Ulead's.
Rant over.