I don't know if the bug still exist but toggle cinama smooth on/off. There was a problem where it would show off but still be on.
As wxman posted above, do the film mode thing. It changes the processing depending on whether you're viewing content that was originated in 24 fps such as film or 60 fps such as live sports that's shot on digital.
As for newer films that are shot digitally, I'm not sure which would apply. You might want to try both and see which looks better.
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