After updating firmaware to MyBookLive 02.02.02-020 : Core F/W I tried to create new users and new shared folders.
Made a new user, made a new folder. Set a limited access to this folder. Copied some videos from Public to this new folder and opened it in a computer from a local network. Trying to play videos I’ve got a problem - playback starts in about a minute… It seems like it makes something like cache and then plays it. Playing same videos from Public - playback starts immediately. Do we have a problem with limited access folders?