Im on Comcast so have a cable modem. have a setup with a node to my computer and one to a WiFi extender to my garage. When I connect the computer node only no problem. But when I connect both the garage and computer nodes nothing works. The distance from the cable house input and the splitter is about 75 ft from the garage and about 50ft from the computer node. there are also cable runs to the modem (40ft) and the TV (60 ft). Any thoughts?