I'm unable to stream HDX to my XBox One. SD is no problem. I've got bandwidth to spare and can watch HDX on my laptop (at least the web-based player states it's playing in HDX). I'll test with a Roku 3 in a bit but just wanted to toss this out to see if anyone else has/is experiencing this.

The only change on my side is that my ISP bumped my bandwidth up to 50x5 (free upgrade, yay!). My modem, router, and XBox have all been power-cycled. Last known working date was 1 week ago (2/23/17).

Any help or ideas would be appreciated.