Online content DC

Hi, in the first case i want apologize for my bad english. Now on the subject.
I have problem with online content. I install serviio 1.2.1 on my NAS QNAP TS-119, on my friend notebook and my PC. In all cases after some time (1-3 minutes), serviio is disconnected from my TV. I look in log and there wasnt anything. So i dont know where is problem. I tried it on Samsung UE32ES6800, UE40ES6300 and UE32ES5500, all time same result. I tried it with youtube plugin, live streams and TED. Can you help me with this? Thanks so much.
I have problem with online content. I install serviio 1.2.1 on my NAS QNAP TS-119, on my friend notebook and my PC. In all cases after some time (1-3 minutes), serviio is disconnected from my TV. I look in log and there wasnt anything. So i dont know where is problem. I tried it on Samsung UE32ES6800, UE40ES6300 and UE32ES5500, all time same result. I tried it with youtube plugin, live streams and TED. Can you help me with this? Thanks so much.