Just did a small test running 4 HD streams and 1 SD stream on the IPTV vlan of the fiber modem. (total of 60mbit/sec). Then I ran a speedtest on the internet vlan (50mbit/50mbit). The speedtest showed me a downloadspeed of 46.91 mbit/sec and a upload speed of 52.15mbit/sec. So that looks good. But I also saw that the load on the networkcard connected to the iptv vlan dropped from 60mbit/sec to 47.9mbit/sec, and giving me some hickups and block artefacts in the recorded video. I was told that the iptv vlan had a higher priority, but it appears that speedtest on the internet vlan can push away the iptv streams… So I guess I have to wait until they really upgrade the connection to my fibermodem to 1gbit/sec as published recently…