Google Chrome caused Mac OS X to have High CPU
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.