Initial thoughts after playing around just a little with Apple TV 4 version:
Wow this is slow loading movies for me from my Synology NAS with a wired Ethernet connection, and switching to 802.11ac WiFi doesn’t seem to help. There’s a good 45-60 seconds before the start of playing almost any movie, whereas the old aTV Flash is just a second or two. FTP sharing may be a bit faster than SMB but it’s still unbearably slow.
Plus movie playback often stops totally and I get a spinner for 45-60 seconds.
Clearly doesn’t handle folder-based metadata like the old aTV Flash version, as tons of folders/files aren’t getting automatically recognized.
No search. Wait, NO SEARCH AT ALL? You have to navigate through giant icons only?
I have a sound issues as well. DTS passthrough doesn’t work with my Denon receiver. Not sure why, again the old aTV Flash version is ok. This new version plays a horrible static noise if I try DTS passthrough/DTS over HDMI.
I really, really want to like this but I feel like something in my network is making this too slow to be useful.