Amazon Fire TV Stick

Who has one with Kodi installed?
My dad bought one of these from one of his coworkers just yesterday with Kodi already pre-installed. My question for you guys is how do we get the most out of this thing?
For example, my pops wanted to watch Revenant, so I tried playing it through Kodi/Genesis and played well for about the first minute then constant pausing for buffering. I then tried it out on Kodi/Phoenix/ForHer and the stream worked just fine.

Can anyone shed some light on this thing? It seems like a very powerful and convenient piece of technology to have but only if you really really know how to get the most out of it.

 

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