Stumbled across this today on the internet, it can test out the quality of your Netflix Connection:
Example short 23.976.
Apparently, if you play this video on Netflix you will see a series of odd miscellaneous clips.
This article explains how to decipher the numbers at the top left hand side of the screen. Not used it myself as I don't have Netflix.
http://www.wired.com/2014/06/netflix-streaming-test/
Let me know how you get on
