I have tried to get this answered without success, so I’ll try here.
I have a Roku 3 and PLEX media server connected via CAT5. Playing 480p MKV movies is very difficult because of interruptions (transcoding) I think. Now the MKV files are direct play with the ROKU 3 as far as I know, and the LAN is wired 100mbps. I can copy the 5gb file over the LAN in about 8 min (reasonable) however, the ROKU pauses about every 8 minutes of viewing.
Whats going on? ROKU can play the file via USB without a hitch. The PLEX server is minimal with a Dell laptop Pentium 4 2Ghz, w/ 2Gb RAM.