No SRT with LG 55LW5600

Hi!
None of my subtitles are working with Serviio.
The videos are all MKV and the SRT subtitles are all correctly named the same as the MKVs (except for the extension, obviously).
The subtitles work fine when playing the videos via VLC on the Serviio machine as well as with Samsung Share Manager on a Samsung TV.
The LG 55LW5600 (with Serviio) doesnt display any of the subtitles. The default LG profile is assigned to the TV in Serviio.
Am I missing anything? Thanks!
None of my subtitles are working with Serviio.
The videos are all MKV and the SRT subtitles are all correctly named the same as the MKVs (except for the extension, obviously).
The subtitles work fine when playing the videos via VLC on the Serviio machine as well as with Samsung Share Manager on a Samsung TV.
The LG 55LW5600 (with Serviio) doesnt display any of the subtitles. The default LG profile is assigned to the TV in Serviio.
Am I missing anything? Thanks!