I have tried Comcast and Verizon FIOS which I have now with SlingTV and on 100mbps up/down connection SlingTV is still freezing consistently at about every 15 to 20 minutes. Just canceled again. I've read that they're not doing too well and haven't really been able to grow their user base beyond 500,000. I can see why. Rumor is if they don't start seeing some considerable growth in the coming year with the new plans that Dish may pull the plug. I have every other streaming service that you can possibly think of or have tried it at some point and have had no problems whatsoever. SlingTV just doesn't seem to want to work for me.