After more than a year of reasonably good wireless speeds (I rarely checked actual speed, but streaming was generally reliable), over past few days we are not even reaching 1 Mbps, with a nominal 20 mbps plan. I've checked the inbound speed through modem web interface (192.168.0.1) and it shows 18.5 mbps, which is probably about as good as it gets. I can reboot modem, after which I get 10-13 Mbps for a few minutes, but then within 5 minutes it's back to 1 Mbps. There are about 6 devices connected to the wifi (secured, so no unwanted devices have access), but even with no active traffic on these devices, still 1 Mbps. Can anybody suggest additional troubleshooting steps to determine why the sudden change in performance?
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