"Security Update 2018-004 El Capitan" just slowed me down noticeably
"Security Update 2018-004 El Capitan" slowed me down noticeably.
Anyone else noticed this? I have multiple backups, thank goodness. How important is this update? I have already read "About the security content of macOS High Sierra 10.13.6, Security Update 2018-004 Sierra, Security Update 2018-004 El Capitan" https://support.apple.com/en-us/HT208937
mid 2012 MacBook Pro, El Cap 10.11.6