How to solve the problem that the network speed becomes slow after installing Windows10 system

How to solve the problem after the Windows 10 system is slowed down?
The steps are as follows:
• Right click on the Start button and select “Command prompt”
• Ensure previous UAC (User Account Control) Open
• Enter the command: netsh interface tcp show global

Then you will find the global parameters of TCP, where "receive window auto-tuning level" is normal, you can close it by the following steps. However, the operation to set the global command failure request on IPv4 needs to be promoted (running as an administrator).
• Right click on the Start button and select “Command Prompt (Administrator)”
• Enter the command: netsh int tcp set global autotuninglevel=disabled

The system will receive confirmation Message, now <; window auto-tuning & rdquo; level has been closed