[sadboy]

Have you already rebooted your ATVF box?

Also, did you disable Media Codec acceleration, as per the wiki? Only LibStageFright is currently supported on the FTV.

Yes, Media Codec acceleration is disabled.

Playback just isn't smooth, it doesn't show that its dropping any frames, but it looks like there is one missing every few seconds.


Should a 24hz movie play smooth?

Its something you would only see when there is scrolling action on screen.
Easy to see on a intro to a movie, when you look at the shot of the globe rotating and zooming out. Looks like it skips a frame here and there.

Android is currently only able to output at 60hz so any 24p content will always undergo 2:3 pulldown. That said, the stuttering effect caused by 2:3 pulldown is usually quite subtle, some people never even notice it, while others may be more sensitive.
So the crucial question is, what is the native refresh rate of your screen (TV)? If it is 60hz then all 24p content should stutter the same regardless of what device you use to play them (they will all eventually have to be 2:3 pulldown, either by the device or by the TV itself), and if you perceive more stuttering on the Fire TV than on your HTPC, then something is wrong with your Fire TV. If however your TV is 120hz or 240hz, and you configured your HTPC to push native 24p to the TV (you would be a moron not to , then it's much more likely you've gotten used to stutter-free play back on your HTPC, and are just experiencing the normal 2:3 pulldown induced stuttering on the Fire TV.