When I play a movie through UPnP and Plex Server, It plays no problem . However, if the file is bigger than 1GB it plays sound only but no video. I tried several different files over 1 GB and it did the same thing. I also tried different types of videos (MKV,AVI and MP4) and if they were over 1 GB, they would not play. Is it the MAG254 , Stalker middleware or Plex Server that its preventing me from playing these videos ?