Win + Tab.

Windows terminal for starters. Windows has virtual desktops built in.

Does the CPU thermally throttle without a fan in your case?

How is that a stupid question?

There is speedtest-cli at least that you can run from a script.

I just learned about these things today when researching for a device to test that there’s no voltage present before installing a ceiling light. Such a great innovation since it works even through insulation, so no risk of getting shocked.