Hello, i am in need of some help. My Samsung 55KU6400 doesn't have the subtitle menu available, i can se the subtitle menu under system/accessibility but can't access it. My nas is transmitting mkv + srt file and my ps4 gets it with no problem but the tv does not have the subtitles menu available. My location is Portugal could it be possible that it not available with this definition? I have looked the hidden samsung menu see if there is any subtitle option but with no luck.. Have already made factory reset but the problem persists.. I prefer to use the tv instead the ps4. Have tried plex, twonky and the qnap dlna app with no luck. Please help..