XBox One app needs some work... I've come across some real problems watching SlingTV on my XBox One, versus my Roku.

Any time a channel converts to the next block of programming, it'll often freeze up, replay the same block that just finished, or struggle playing the first 10 seconds of the block multiple times.

There's been a few instances where I'll be nearly finished with an episode of something, and upon reaching a commercial break, the episode will revert back to the halfway point out of nowhere.

It's very buggy and unstable. I've yet to experience any of these problems on my Roku in the next room, using the same Wifi internet connection.