Router: Airport Extreme (latest model) ISP; local microwave Wifi Network: iMac, 2 iPhone's, 1 iPad, 1 MacBook iMac: Sierra 10.12.3

Wifi works fine until I connect to network with iMac wifi. It will either crash the network or reduce the speed to almost zero

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    "... local microwave Wifi Network?" – IconDaemon Mar 9 '17 at 18:33
  • Live in the Country. Use microwave provider for internet. Wifi using Airport Extreme as router connected directly to POE from microwave antenna. – LuisBorges Mar 9 '17 at 22:47
  • Thought it might have been unintentional. Have you restarted the AE, and restarted the microwave router/access point? – IconDaemon Mar 10 '17 at 0:16
  • Yes, and I replaced the AE with a brand new one, thinking initially it was the router. Have also power cycled the POE. I can plug MacBook directly via ethernet into the POE and get full performance. It has taken me a while to narrow the problem to my iMAC (maybe). – LuisBorges Mar 10 '17 at 14:00
  • Interesting, Wifi-off on iMac and internet works fine. Wifi-on and network fails – LuisBorges Mar 10 '17 at 14:54

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