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Since downloading High Sierra my MAC is incredibly slow

Does anyone know what I can do to get back to pre High Sierra speeds?

iMac (21.5-inch, Late 2013), OS X El Capitan (10.11)

Posted on Dec 15, 2017 6:42 AM

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Posted on Dec 15, 2017 12:07 PM

Top Processes by CPU:

21% SophosScanD


While Sophos looks for viruses that don't exist, your Mac will have little time to do much of anything else.


Use the Remove Sophos Anti-Virus program. It will be installed in your Mac's Applications folder, unless you moved or deleted it. In that case, follow their uninstallation instructions here: https://community.sophos.com/kb/en-us/122710.


Beware that its uninstaller's effectiveness is poor, a typical characteristic of such junk.


System Software:

macOS High Sierra 10.13.1 (17B1003) -


Update macOS. To learn how to do that please read Keep your Mac up to date - Apple Support.

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Since downloading High Sierra my MAC is incredibly slow

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