Remember When Chrome Went Bad on MacOS?

Daring Fireballby John GruberJune 4, 2026tech

Loren Brichter , back in 2020: Short story: Google Chrome installs an updater called Keystone on your computer, which is bizarrely correlated to massive unexplained CPU usage in WindowServer (a system process) 1 , and made my whole computer slow even when Chrome wasn’t running . Deleting Chrome and Keystone made my computer way, way faster, all the time . Long story: I noticed my brand new 16” MacBook Pro started acting sluggishly doing even trivial things like scrolling. Activity Monitor showed

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Remember When Chrome Went Bad on MacOS?

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