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Homes need to be built for better internet
(www.theverge.com)
This is a most excellent place for technology news and articles.
If there are Ethernet ports in every room (as the article describes) then the back haul happens over wire. No unusual packet loss or latency with a few plug and play pucks throughout the house.
Yeah. Have most just act in mesh mode for the wired internet so that your mobile devices (which are generally latency insensitive) have optimal coverage. If there is a spot that you just can't reach and that has no drops? That is when you turn on extender mode and start taking the hit.
Also, if there is meaningful packet loss then that is generally a sign that your access points are too far apart. If the signal barely reaches the access point then it can't really meaningfully extend the reach of the network.