IPTV issue

Hello,

when I try to watch IPTV Stream, the stream is for the first 4-5 seconds fine but after that the video is stuttering and there is no sound. When I try the stream on my Vu+ Solo with VTi or on my PC the stream is working fine.

I'm using the latest openpli 4 - Engima 2014-11-16

Can someone help me to fix this problem?