As I mentioned back in
post #10, "........the switch portion of most routers is not meant to handle the constant data (video) stream of network cams."
Probably...
Why do you even have 2 routers? The LAN of the "Family Room" router being connected to the WAN of the router in "My Room" (?) not only creates a new and different subnet but also produces a double NAT which can slow donw Internet speed somewhat.
FWIW, any wireless router can be configured to function as a wireless access point only and not perform the routing function.