How to Use Task Manager Eco Mode in Windows 10 & 11
Microsoft is adding Eco Mode to the Windows 10 Task Manager. Eco Mode can reduce the CPU load on most processes by reducing the process's priority, resulting in a faster, more energy-efficient computer.
Eco Mode has appeared for Windows Insiders in Windows 10 Build 21364.1000 and should be available to everyone in the next Feature Update, due out soon.
Note that applying Eco Mode runs the risk of instability for certain processes. You should only apply it to processes that are using a lot of CPU. If you run into any problems, disable Eco Mode for that process.