Returning a PR4100 is not “solving” your issue. A PR4100 is the newest state of the art NAS from WD. My DL2100 serves up media plenty fast to be played by a WDTV and anything else that can play the media. Plex is not the best way to get the job done. I rarely use it. And, a Roku is not my choice of player of my videos. Even a FireTV stick running Kodi does a better job than the Roku.
