I use TV in HD with Entertain by Telekom. Here I Speedport Powerline 100 Telekom used. At times, at HD transfers only image artifacts. Auto technician of Telekom Did the Speedport Powerline is the culprit. Away with the Speedport's - Fritz! Powerline plugged - unfortunately - the Entertain the premier television time 'image artifacts' On the Fritz! Powerline also depends on a network switch and a PC more quickly. Here, make the 500 Mbit very well noticeable. According to the contract I have with Telekom VDSL 50 !!! But there are at much less. At least now I have a bottleneck less ...