Sometimes the videos are jittery or seem to pause a lot, why?

If the video you're attempting to play starts to skip, is jittery, or pauses frequently
it may be because your internet bandwidth may be overutilized.
This may happen because you're performing multiple tasks, such as playing video, checking email,
surfing the web, etc. You can try closing some of your other tasks to resolve the playback problems.
This issue may also occur if your internet provider is experiencing bandwidth problems
or if you're on low-bandwidth connection.