Turning off performance effects can reduce cpu and memory usage. The shutdown method is: right-click this pc and select Properties → Advanced System Settings → Performance Settings → Change the checkbox to adjust to the best performance.

Second, close the system automatic update and automatic backup service.

Automatic system update will automatically download the latest version of the system patch in the background of the system, which may cause the computer to get stuck. Closing these two services will not have much impact on the system. The closing method is: use the shortcut key win+r to open the running window, enter "services.msc" and press enter to open the service window, find "Windows Update" and "Windows Backup" in the service window, and set these two services as forbidden to start.

Third, shut down redundant self-startup items and useless processes.

Useless processes and redundant self-startup items on the system will occupy memory and slow down the startup speed, so the redundant self-startup items and processes can be closed one by one through the task manager.