I'm using a Synology NAS, ATV 4K with new Cat 6 cables and a good router. I have had the same system for more than a year easily streaming 250+ Mbps files over NFS. I'm on 6.3.2.
Suddenly and unexpectedly in the past week the speeds dropped. I'm able to stream 1080P files, and intermittently I can do some 4K files but typically I just get the spinning wheel. Speed tests show around 100-150 Mbps. My attempts at fixing so far:
-Tried many different files, seems to happen to all files but more noticeable on 4K high-bit streams
-Changed from NFS to FTP. First test gave me 700 Mbps but after that it would bounce all over the place and now will hover around 5 Mbps (slower than what it does on NFS).
-Tried Legacy streaming, no dice.
-Reboot of all hardware and all up to date.
The ATV can stream 4K from other online sources.
edit; One other random data point, when I navigate to a movie in InFuse, it gives me a spinning wheel just to the right of the movie title. I can still play the file from there, but it seems like it is perhaps struggling to download metadata? I've cleared meta-data and it's downloading again, but it does seem to be taking an extraordinarily long time.
Not sure if this is a Synology thing or a InFuse thing. I'd appreciate any help because right now my system is worthless for all my 4K media.