Linksys Wireless Router :: WRT160N V2 Goes Dead When There Is IPTV Traffic

I've got an IPTV network with Bell FibeTV with Motorola VIP1216 (the DVR master) and VIP1200 (slave) cable boxes.  All the coax cables in my walls form a wired ethernet network instead of a cable TV network.  To get better wireless coverage in my home, I've set up routers as wireless access points at each of the cable boxes.  Essentially I've plugged the router into the ethernet bridge of the cable boxes, and disabled DHCP and gave it a static IP and did all things I needed to do to disable all the routing capabilities and make it into a switch (here's what I did, step by step: [url...]).  So when I go from one room to another, I just select a new wireless access point to get maximum signal strength and speed.