IPTV IGMP multicast UDP 5 minutes only

[Dimac]

Hi all,
I have problem with IPTV.
When I open channel, it shows about 5 minutes only.
This issue on igmpproxy and udpxy.
On igmpproxy channel freeze, solution - reopen channel.
On udpxy channel reload automaticaly.

Any ideas?


firmware: 378.51
router: RT - AC68U.

PS. On latest firmware DD-WRT IPTV works fine.