Internet suddenly slow on Windows 10 PC, at same time ISP doubled bandwidth

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ScottH63

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Running Windows 10 on a Dell Inspiron 660s. Wi-Fi/internet has worked perfectly for years. Suddenly as of yesterday, the internet speed I'm getting on the PC has slowed to a trickle. It seems to have happened at the same time my internet provider boosted the speed.


For the last 6 months I've gotten a dependable 50 Mbps on this PC. 2 weeks ago the ISP doubled the speed automatically. For some reason the router was still only sending out 50 Mbps by Wi-Fi, but if I connected a device by ethernet, it got the 100+ Mbps. I continued to get a reliable 50 Mbps on the PC by Wi-Fi, which was plenty.


Yesterday suddenly my PC internet speed dropped to a trickle - just 1 or 2 Mbps. However, coincidentally, the router is now putting out over 100 Mbps on Wi-Fi. If I connect my phone or an Ipad, on the same Wi-Fi connection, they are both getting 110 Mbps.


I've tried re-starting the PC and router multiple times. Ran MalwareBytes and network diagnostics. Haven't installed any new programs.


I'm wondering if after whatever changed to allow the Wi-Fi speed to more than double, the PC can't handle the new bandwidth.

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