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I find my MAC running really slow.  When I look at activity monitor, I see HP DEVICE MGR at the top of CPU using 60-70&.  If I kill the app, it just starts up again.  I have deleted the printer and re-added with the same results.   

 

Do I have to go buy another brand printer?  The printer is 9 years old.

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@jmloving

Thank you for posting on HP Support Community. 

 

Don't worry as I'll be glad to help, however, to provide an accurate resolution, I need a few more details:

  • Before Mac OS X Catalina update, was the CPU Usage lower than the current usage?

Meanwhile, Update the printer firmware

Download available firmware updates from the HP website

With the printer on and connected to the computer, go to HP Customer Support - Software and Driver Downloads, and then identify your printer. Look for and install any available firmware updates. Refer to the document HP Printers - Updating or Upgrading Printer Firmware.

 

Hope this helps! Keep me posted for further assistance.
Please click “
Accept as Solution” if you feel my post solved your issue, it will help others find the solution.

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