What should I do if the Internet speed is very slow after installing the official version of win10 on the desktop?

After upgrading win10, many people find that the Internet is slowing down. This may be a NIC driver problem, or it may be a problem with QOS settings.

1. First check the software with software (drive XX). Whether the network card is the latest or most stable version, in general, there is no problem, just in case,

2, WIN+R, enter gpedit.msc, enter Group Policy Management
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3, find "Windows Settings" on the left, left click, then find "Policy-based Qos" on the right, right-click "Policy-based Qos", select "Advanced Qos" Setting “, as shown in the figure, basically no problem