It is not the Internet connection

Sling is fine for streaming live tv with all the commercials, but has some serious streaming problems with the On Demand options. Each time I had a problem streaming an On Demand episode on Sling, I checked and Netflix was working just fine. Sling on the other hand kept buffering endlessly, and when it finally worked out, it would not allow me to resume at the same spot I had left off and I had to watch thirty more minutes that I had already watched. Its not the Internet connection. It needs serious improvement on the Resume function and allowing viewers to easily navigate the episode time line. Otherwise, its more frustrating than its worth.

Winiznayne about Sling: Live TV, Sports & News, v4.3.0