Thank you the quick testing and reply.
Judging from your above reply it would appear there is something installed in you Admin Account
5 - Suggest downloading the Application Etrecheck directly from a well Respected ASC Contributor. And Safe to use.
The application is free or paid from added features.
Run the application with Full Disc Access ( Security & Privacy - Full Disc Access ).
It will take a Snap Shot - both the hardware and software.
The Report will Not Reveal Any Personal Information.
Post back the Full Report - copy and paste - using the Additional Text Icon ( 3rd Icon to last )
We can have a look at the report for possible issues and may have possible suggestions to resolve the issues.
Any Third Party Applications that will interfere with the normal operation of the OS, alter, modify, remove or delete or attempt to do so is an invitation for disaster and may require a Reinstallation of the OS in-order to replace any modified, altered, removed or corrupted elements of the OS this software has inflected on this computer
Any of the below should be removed as per Developers Instructions
This includes AntiVirus, Disk Cleaners, Disk Optimizes, UnInstaller etc.
This will include CleanMyMac , This will include BitDefender ,
This will included Norton Antivirus , Sophos Av Software
Intego AntiVirus, McAfee, MacKeeper, Avast AntiVirus
Ad Guard, Webroot
The The Built in Security is all that is required.