As I get a direct connection through TWC now for most streams I watch the Fire TV Netflix app does go up to HD now even Super HD which before they would not go past 480p but I still don't chance it because of the tiny buffer. Nothing is more annoying then watching something and it pops up Loading. Please Wait which scares the crud out of me. Remember the Roku 3 had a horrible Netflix app too which use to do the same and had a tiny buffer. Now they updated it last year and it is so much better. I rather be safe and have the 1 to 2 minute buffer for Super HD that the PS3, PS4 and Roku 3 have.
Also Amazon Instant on the Fire TV all programs have a great 3 minute buffer which is to be expected.
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My Router: Netgear R7000 - Advanced Tomato 3.4-138 K26ARM USB VPN-64K.
My Primary Streaming Devices: Fire TV Box (2nd Gen), Roku Premier (2016).
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