If you are having issues with stuttering of the videos, the best thing to do is press the pause button and wait for more of the video to load before resuming your viewing.
If this does not help below is a message from the video host service Vimeo.com:
We know stuttering is annoying, and there are many possible reasons why you may be experiencing poor video playback. Vimeo requires a better than average internet connection and computer processor, so if you have a slow connection or older computer, you may experience issues. If not, here are a few things you can try:
1) Make sure you have the latest version of Flash running on your computer. You can check what version you have here: vimeo.com/help/flash
2) Please turn off any other programs, virus protection, ad block, or energy saving settings as they may interfere with video playback.
3) Try closing other browser tabs if you have many opened.
4) Try another browser and see if that helps.