I'm using rut240 in pass through mode.I've internet radio and the connection to stations drops frequently.I've another router from zte which working without this issue (also in pass through mode). I've troubleshooting log.
Edit: I can see tv streams without problems but voice is dropping sometimes but not as often as radio stream and I can stream music from my Logitech media server at home (Teltonika router is at my country house) to Logitech player but there are drops too. It seems that only voice streams are affected.