A gadget's only as good as its internet connection. Few things drive you crazier than a stuttery PUBG session or an episode of Game of Thrones streaming one. Halting. Word. At. A. Time. You probably don't think much about your router, though. And yet, by the time you've connected a family's worth of phones and tablets—plus your laptop, Roku, Xbox, smart fridge, doorbell, and thermostat—you've stressed out that Netgear RT-X86Something you bought at Circuit City in 2008.