Tired of Google Chrome slowing down your Mac? There’s a solution

It looks like Google Chrome could be behind your Mac machine running slower than usual, thanks to it chewing up CPU resources. But fear not, there are fixes for the problem.

Frustrated Chrome user and software developer Loren Brichter discovered that the Chrome Keystone auto-update mechanism was the cause of the slowdown. 
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https://www.tomsguide.com/news/google-chrome-reportedly-destroys-mac-performance-heres-how-to-fix-it