Currently using a hacked chromebox and looking at replacing it with a mi box. Can kodi do proper framerates as well as dts/dd/truehd/etc passthrough on androidtv.
Edit: nope, DTS passthrough does not work and at least one movie (initial d legend 3) is choppy af
Gonna return it
edit: may be ecause im using kodi 17
SPMC can (I've done 23.976 and 50 and 59.94/60 on my Sharp TV as that's what it supports) the Shield TV, I have no idea about a Mi Box.