Teach you to disable Heartbeat only on non-editing pages in WordPress backend, keep the autosave and edit lock, not affecting the frontend, reducing admin-ajax load and CPU usage.

In 2013, WordPress introduced the Heartbeat API, a feature that allows your browser to automatically communicate with the server. If you are using web hosting, you need to look carefully at your server's CPU usage. This is because when you exceed the limit, some hosting companies may...