ANOTHER WRENCH IN THIS PROBLEM
Two weeks ago I updated my Comcast modem because, like the rest of you, I was having streaming performance issues with my Apple TV and Vizio Smart TV.
My Vizio Smart TV was only getting 1/4 of the expected download speeds whether on wireless or wired. I figured that my modem was to blame. Comcast issued me the all-in-one Technicolor modem & wireless router.
After installing the new modem/router, my download speeds were incredible. While my Vizio was still only showing 1/2 of the expected download speeds (12Mbps down) it was significantly better than the 4Mbps I was seeing before upgrading the modem. For approximately 10 days following the modem updgrade I didn't have a single streaming issue on my Apple TV or my Vizio Smart TV. Unfortunately, it all came crashing down a few days ago. Netflix through my Apple TV is very spotty and my Vizio Smart TV is back to 1/4 of the expected download speeds.
Here are my network speeds. Note: wired and wireless speeds are the same.
28 Mbps down on MacBook Pro
28 Mbps down on iPhone 4s (iOS7)
2350 kbps down on Apple TV using Netfilix "Example Short 23.976" tester
4361 kbps down on my Vizio Smart TV using built-in network tester
So I ask you, why would my Vizio Smart TV also show slow speeds (via built-in network tester) similar to the speeds seen on Netflix via Apple TV? Coincidence? Again, my MacBook Pro and iPhone 4s still show 28 Mbps download speeds?
I don't get it ... completely baffled.