Drummerboy, 1. do you have wireless in your router? if so, is your wireless secureed somehow (WEP or WPA PSK) 2. how many other devices do you have on your network. (how many PC's, xboxes, smartphones, etc... do you have) 3. are you running any kind of server, such as playon, tversity, etc... to media share personal music/photos/videos? What I'm trying to figure out, is how much broadcast traffic you may have on your network. Note, that for all intents and purposes, Multicast traffic IS broadcast traffic, as a data point: 6 DVR's all on ethernet network with about 12 PC's, 3 X-Box 360's 2 servers, couple of WII's (Wireless) several smart phones, etc... all of this (except the servers) run DHCP with no reservations. we have no issues in our network. Most of the equipment runs 24/7 by aid of battery back-ups. I tried to diagram it once, but gave up as it got too busy... however, I have vast experience with routers, and I know of no consumer level router that would outright block multicast packets, however, quite a few use something called a soft switch, where the router's software does the data transfer, and all of the data have to be manually divided and sent out the router's switch ports, this delay could theoretically cause problems. Connecting through a switch is a good idea, and I will be curious to see if it works. other than that, a better router, such as one with a gigabit switch built in would be a good thing to try. but a small switch would be cheaper.