Why WindowServer Uses High CPU & Memory on MacOS Tahoe and How to Fix It

If you have felt your Mac is curiously sluggish, you may have opened Activity Monitor to investigate at some point and noticed a process called “WindowServer” using a large amount of CPU or memory. High CPU usage and memory consumption of WindowServer has been a long reported issue on MacOS with various system software versions, but a resurgence of new complaints about WindowServer have surfaced with the release of MacOS Tahoe. Some Tahoe users feel that WindowServer is using excessive amounts of system resources, leading to sluggish behavior, poor performance, laggy animations and interactions with the user interface, and even excessive battery drain.
WindowServer is a core part of MacOS, and these complaints are often justified, but it’s important to understand what is likely causing the problems with WindowServer resource usage, and what you can do to manage it. Let’s dive in and learn more about the WindowServer process, what it does, and how to troubleshoot its resource usage.

















