For anyone with a similar line of inquiry, I also learned about a relevant feature of PlexKodiConnect called “Direct Path” where PKC/Kodi on client grabs the content’s local address from your Plex Server and plays it directly from there without relaying through the server.
So when I get my new, more capable client device, my order of business will be:
- Test stability of 4K streaming direct from current server. 200Mbps may be enough bw to handle these high-bitrate files. If it’s not…
- Move 4K files to NAS and set up Kodi/PKC w/ Direct Path. If that doesn’t work well for w/e reason…
- Host a second Plex Server from the NAS (it’s a low-power PC, not actually a NAS) just for the 4K content.
Info WRT Direct Paths: https://github.com/croneter/PlexKodiConnect/wiki/Direct-Paths-Explained