One major annoyance for me on the ATV3 is the way the artwork of media served from iTunes wasn't cached (either due to sloppy programing or lack of space). Case in point when browsing movies, if I were to stop on a film, the artwork doesn't appear until I've already read the synopsis and am about to move on (also happens for TV shows and music). Has this been fixed on the ATV4 with a dedicated cache?