You're looking for a piece of software related to CPU management. Here are a few options:
Before downloading, make sure to check the system requirements and compatibility with your operating system.
Modern CPUs (Intel and AMD) are designed to be energy efficient. When your computer is idle or under light load, Windows automatically "parks" (disables) some of your CPU cores to save power. When you launch a game or a heavy application, Windows attempts to "unpark" those cores to provide full power.
The CPU Core Parking Manager 3 is a tool that allows you to control the parking of CPU cores, which can help improve system performance and reduce power consumption.