When you install the Ubuntu system on a physical machine, don't forget to do these things to improve your computer's
performance.

My experiments found that the improvement was very noticeable, based on Ubuntu 20.10.

use s-tui to monitor and test your max CPU frequency

how to install

sudo apt install python3-pip stress
sudo pip3 install s-tui

how to use

sudo s-tui

You can use the arrow keys and space bar to switch between Monitor mode and Stress mode. The Stress mode performs a
stress test on the CPU.

use indicator-cpufreq to set your CPU frequency

how to install

sudo apt install indicator-cpufreq
sudo reboot

how to use

Look at the status bar icon in the upper right corner and click on the emerging icon to set the CPU's performance mode.