I have to confess, when it comes to watching Netflix, Amazon Prime or even using my Plex server, I've switched to using my built-in Samsung smart TV apps.
I have an ATV4 (not 4K), and I find I get built in 4K content with the Samsung apps, it's much faster to load than the ATV and appears to have the features.
I still use my ATV but predominantly for music and some dedicated TV apps like BBC iPlayer and my IPTV, but otherwise it's a bit redundant these days. (Even my Samsung has STB Mag Emulator so no real need for ATV for IPTV anymore).
I have an ATV4 (not 4K), and I find I get built in 4K content with the Samsung apps, it's much faster to load than the ATV and appears to have the features.
I still use my ATV but predominantly for music and some dedicated TV apps like BBC iPlayer and my IPTV, but otherwise it's a bit redundant these days. (Even my Samsung has STB Mag Emulator so no real need for ATV for IPTV anymore).