I don't know about Sling, I don't have Sling here. looking at their site though, it doesn't seem to actually state a speed, just says high speed internet for their minimum requirements. Pretty general and unhelpful statement there.
Roku Users:
- Roku 1, 2, 3, LT, Roku TVs from Hisense and TCL, Roku Streaming Sticks, HS, XS and XD
- High speed internet connection
http://help.sling.com/articles/en_U...em-requirements-for-using-the-Sling-TV-app-9#
They have some articles on their site about buffering, pixelation, but nothing that seems helpful. Did you check your DL speed and see that you are actually still getting the 6 mb that you should be, or close to that? Maybe your connection speed has dropped and time to call your ISP?
We had DSL quite some time ago [AT&T] at 1.5 mb down and our Rokus and all worked fine, but once in a while they would glitch up and I'd check our speed, it would be low. I'd call them and always it was, "let's check it, yup, it seems low, you should be fine now." within a minute or so, back to normal.
We have 15 mb down through Atlantic Broadband now, which gives us no trouble.