DNLA server RT-AC 68U Merlin 376.49_5 Trouble

[neiremaove]

I've 2 SmartTV of 2 different brand (Samsung & LG)

On the 2 TV when I stream a program from the DNLA server of the RT-AC 68U I got "Disconnected from service" message after 30 minutes connection (or a bit more, but less than 1 hour)

If I check my network neighbor (Windows) I see all my DNLA server enabled devices minus RT-AC, I've to log in, go to USB tools and turn on/off "Enable DNLA server button to see it again.

System Log doesn't show something particular just "rc_service: httpd 657:notify_rc restart_media"

I've a USB key plugged on USB2 and a SSD in USB3 plugged on USB3 slot

Any idea ?

Thanks