Originally Posted by BiggAW
I'm not positive about the Boston market, but I know in Hartford, the tiers are 25mbps and 105mbps (Blast!). You'd probably have to have Blast! to get anywhere near 100mbps. If they upgraded the Boston market to 50mbps and 105mbps in order to compete with FIOS (Cambridge and Boston would come along with the 'burbs, even though they don't have FIOS like the 'burbs), then maybe you could get 60ish off of Performance, but not 100+. Either way, if you're getting 40mbps, and the FireTV can't do 1080p, then there's something wrong with the FireTV and it's software. You should only need about 15-20mbps to do 1080p.
I'd love to blame it on that POS Xfinity gateway contraption that you're paying Comcast a ridiculous $10/mo for, but I'm not convinced that's really the issue. 40mbps is way too slow for MoCA, but it still should be plenty for 1080p. I get 1080p/SuperHD on everything with Wifi N for my FireTV Stick, Chromecast, and AppleTV and Powerline for everything else (through a few Ethernet switches). Did you try running the FireTV off of wireless? Some devices like wireless more, probably because they were tested a lot better for wireless, since most customers will use wireless and not Ethernet. The AppleTV is glitchy and won't update properly when on Ethernet for some unknown reason.
I'm realizing how important it to choose the servers the various speedtest sites use. I'd been testing to Washington DC with TestMy.Net and Boston's Comcast server with Speedtest.net. I'm now equalizing that, now that I've found the place in Speedtest to choose the server (under Settings - be sure to hit Save - and then test to your "preferred server"). In TestMy.Net, go to the link called Mercury at the top of the page and you'll get the big list of servers. Click on one and the test will start.
The 150% gap I'd been seeing between the two test sites has gone away, and now I'm just seeing moment-to-moment variation.
Right now, testing to Comcast.net in Boston, I'm getting, over MOCA, 52 Mbps (TestMy.Net) / 72 Mbps (Speedtest.net); at the Xfinity 117 Mbps (TestMy.Net) / 119 (Speedtest.net).
But the most appropriate test here is to where Prime comes from, which is Amazon in Seattle. To Seattle, TestMy.Net's TestMercurY.net lets me choose Amazon Web Services or Amazon's even faster Cloudfront.net as the server, while Speedtest net gives the choice of five other servers, but not Amazon's, the fastest seeming to be the private Softlayer Tech (not the public ISPs).
To Seattle over MOCA I can get 40 Mbps (TestMy.Net to Cloudfront) / 35 Mbps (Speedtest to Softlayer Tech); at the Xfinity 102 Mbps (TestMy.Net to Cloudfront) / 113 Mbps (Speedtest to Softlayer Tech).
I'm glad I moved the Xfinity downstairs! Even your wifi theory supports that, as without bringing the Xfinity down there, I'd only have my FIOS box's WiFi g in the theater.
I'll test your theory by turning off the wired connection in the Fire TV and letting it connect wirelessly over n to the Xfinity, which is only about 4 feet away.
If the 1080p flag comes up faster over WiFi than the 30 seconds it's consistently been taking wired - which would really surprise me - it'll be evidence that Amazon made the radio faster than the jack, which sounds unlikely to me.