Our main streaming service is DirecTV Now, and this stick doesn't run it right. The app seems to works and then just freezes. When I go to run a speed test, the connection is super low, and then ramps up over time back up to full speed. It's as though the app crashes the stick. Other things seem to work fine, but not the app we use the most. Will return and continue to use gen 2 and gen 3 devices. Too bad.
UPDATE: So, I deleted DirecTV Now and did a fresh install. For the past three days, things actually worked well and considered revising my rating. Then I tried to watch a little Sunday football. CBS froze over and over again and caused the app to continually crash. Thought maybe it was the local CBS stream because other channels worked fine. Then I tried the Roku I have in my kids room, DirecTV Now worked fine. Figured I'd give it another go for the second game, same result. Watched Rams/Seahawks in my kids room with no issue on the Roku device. Again, other apps seem to work fine (I think) on Fire, but this stick isn't right just yet. I'd wait for problems to work itself out.