Sorry but a second or third wireless router only cuts the bandwidth IF the network is setup in WDS mode.
Even if you set it up in WDS mode with 300/5ghz channels being used to talk to each other you still end up with way more than enough bandwidth to handle media streaming.
Setting the "out there" router as a wireless AP and using its LAN ports to bridge wired devices to the main router does not cut bandwidth. WDS yes.
Right now have back of house that is essentially a two room apartment with an Onkyo 626, Panasonic BDT500, at least two laptops, iPads and iPhones are running through a router in the back that is connected wirelessly to the main router/gateway.
They hammer bandwidth and there are no issues.
Setting up a in home network system using two routers and connecting them wirelessly is not hard. Cost of basic dual band router not high either. You don't need heavy duty muscle for the "out there" router.
I have Asus RTN-66U for main router and a lowly Linksys E3000 for the "out there" router-ap.
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