Google Chrome caused Mac OS X to have High CPU I'm not sure if anyone else faced this issue also. My Mac Book running so hot. I'm on the latest OS BigSur, and on a MacBook Pro (16-inch, 2019). As you can this Mac is fairly new and fully loaded. It's kind of sad when it's hot over an app like Chrome, and Apple technician can't find anything wrong it while I brought it to the store twice.
I'm using the default charger that it came with the 16&quot; (96W).
I reinstalled OS twice by me, and by Apple. I tried reset SMC so many times, and it still seems over heat back. I checked Activity Monitor, I saw a lot of Chrome extensions.

How can I make my Mac run like normal again and still able use my Chrome like others ?
I've tried disaled a lot of the extensions already, but how do we know which is the one that might have caused these high CPU consumption ? Is there a way to find out ?
Note

When I closed Chrome, my Mac is not hot or loud anymore, so Chrome seem to be the major caused in my case.
I had a similar problem. A new MacBook Pro was still (after a couple of weeks) running too damn hot. And Chrome was, seemingly, not using a lot of CPU or RAM. And still there were a number of articles and forum posts about how Chrome is still the root of all of this evil.
Being the skeptical type I left Chrome alone. But the heat issue was still there and nothing else was fixing the issue. So I followed some instructions on some web page, somewhere that had some detailed instructions for removing Chrome and all of its little background processes. Google it, you will find quite a few helpful places with detailed instructions.
In its place I installed Brave, which is based on Chrome but without all the tracking and auto updating and anything else Google could throw at it.
It worked.
So if you can do without Chrome itself and use Brave in its place you just may find that does the trick.