jerky playback
 

I'm having a strange problem: a rendered section of my video (1920x1080, mpeg2, prepared in Movie Studio Platinum HD10) doesn't play well in Windows Media Player (that comes with Windows 7 Home Premium). The video starts to jitter. Ironically, it plays fine in the next playback after it starts looping the film.

Everything plays fine in PowerDVD 8.

I'm not sure what the problem is. This section of the video is not complex from the editing point of view. I tried isolating the clip, and it does the same, although not in the same instant.
Help?
As you can see in my signature, my PC is quite fast.

try moving the clip to another hard drive and see what happens.

I have only one drive, but this happens in every rendering attempt that I make.

I also copied two original clips into another folder (including the clip that exhibits this jitter), created a NEW project, rendered, and this plays fine. Therefore, I think the problem is with the project, not the original clip.

I also created a new project by deleting all but a few scenes near the problem area, but the problem remains after rendering.