If you’re using Windows 10’s Power saver plan, you’re slowing down your PC. That plan reduces your PC’s performance in order to save energy. (Even desktop PCs typically have a Power saver plan.) Changing your power plan from Power saver to High performance or Balanced will give you an instant performance boost.
To do it, launch Control Panel, then Power Options. You’ll typically see two options: Balanced (recommended) and Power saver. To see the High performance setting, click on Show Additional Plans. If you don’t see the High Performance option then click on Create a Power Plan on the left side of the screen. You will be presented with several plans, one of which should be High Performance.
Click the High Performance radio button, then go to Plan Name and give it a name…might as well call it High Performance, right? Click Next, and then Create on the subsequent screen. The resulting screen should indicate that you are now using the High Performance option, and you can exit Control Panel.
High performance gives you the most juice, but uses the most power; Balanced finds a median between power use and better performance; and Power saver does its best to give you as much battery life as possible. Desktop users have no reason to choose Power saver, and even laptop users should consider the Balanced option when unplugged — and High performance when connected to a power source.
Ref: ComputerWorld 2018