Add or Remove Maximum processor frequency contains the registry files to show or hide the 'Maximum processor frequency' option power settings in Windows 10, which is hidden by default. You can also make these changes using PowerShell, as explained in this tutorial.
Double-click AddMaximumProcessorFrequency.reg or RemoveMaximumProcessorFrequency.reg.
Click Yes when prompted by User Account Control. Click Yes when prompted by Registry Editor.