This is very good thread on streaming 4k content in general, but I’ve also weighed in with my experience with LG 4k sets and Sony home theatre equipment.
I have no issues at all playing back 4k content on my setup (an LG OLED55B8 and a 55SK8500) with the following caveats:
- the TVs and server are on a wired network
- most of my content is reencoded (as opposed to remuxes); the LG sets only have 100mb/s wired interfaces and some remuxes are over 100mb/s. WiFi has the possibility of higher throughput but is generally less reliable.
- my home theatre gear is connected via ARC output from the TV. This means no HD audio. DD and DTS will play fine, as will the DTS component of a DTS-HD MA track. TrueHD will trigger a transcode, so avoid it.
- the LG sets can’t display bitmap subs natively so PMS will trigger a transcode and burn them in if you select. Avoid this by only using SRT or similar subs
Your NAS doesn’t need to be particularly high spec to stream 4k, it’s transcoding that uses all the CPU and RAM and you want to do everything you can to avoid transcoding 4k content anyway.
