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Beginner
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I have a 300MB internet connection. It ran fine for several months and then the speed dropped to 89MB. I have had a tech service guy here and Spectrum. Both tell me my router and modem are putting out the 300MB, that it is internal.

The tech guy used a linux stick and the connection worked fine. What is causing the slow down in Windows 10 Pro. I added an Intel Gigabit CT card to see if that would make a difference. No. A web site called superuser suggested resetting the TCIP stack. I was able to follow the steps but the stack did not reset.speedtest.PNG

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Super User
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If it works fine with Linux, and you believe it to be a windows problem, and you have eliminated the Intel LAN controller as a problem, contact Microsoft support.

 

Doc

 

Doc (not an Intel employee or contractor)
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