Produced a video in Vegas 13 (Windows 8.1). It plays back fine in Vegas, as might be expected. I rendered it to MPEG2, since the final destination will be DVD. Just to take a look at the finished product, I pulled the .mpg file up in Windows Media Player. For the most part, it looks and sounds fine, but there were occasional glitches, where the sound and picture paused very briefly (less than a second).
Should this concern me?
By the way, the render option I chose was Main Concept MPEG-2 NTSC Widescreen.