Hello. I've already tried searching for this particular issue without any results, so here goes.... I have the above mentioned version of Vegas and encounter video playback/rendering problems with .wmv files. The .wmv files that I bring into Vegas always stutter (or are jittery) both during playback and rendering. The very same .Mp4 files don't experience this and playback/render fine. I've tried adjusting various import settings, etc. to no avail. Any suggestions?