this has been driving me crazy and i have googled and trawled these forums but maybe I'm not good at searching because I can't find the answer.
I have PLEX app on my XBONE and am set up on a hardwired LAN with PLEX server on my Netgear ReadyNAS 104.
I have 2 exact same files in .mkv container with following codec info the same in both. one streams no problems, the other keeps returning "server not powerful enough to convert". i have all conversions turned off and direct play is all ticked. I have found that this is occurring across my library. some work some don't for no apparent reason because lately all my stuff is in .mkv containers but they are random in what works and what doesn't.