Beach Balling and Terrible Performance Catalina

I have an older iMac Late 2012 - ever since installing Catalina and all the updates the OS has just gone Crazy. I have done everything, work with Apple Support and reinstalled the OS 3 times. That helps for a short while then files won't copy, Time Machine won't work, Everything is very slow, FaceBook is the slowest then quits. What do I need to do ?

I have run ErteCheckPro and number of times and worked my way through most of the problems, but nothing has helped. I cannot get the entire report on this post without exceeding the character limit. Sometimes rebooting also helps for a little while. I have restarted and reset the PRAM and everything else that Support suggested.

Thanks for any help.

EtreCheckPro version: 6.3.1 (6D012)

Report generated: 2020-10-25 14:12:47

Download EtreCheckPro from https://etrecheck.com

Runtime: 5:58

Performance: Good

Problem: Beachballing

Major Issues: None

Minor Issues:

    These issues do not need immediate attention but they may indicate future problems or opportunities for improvement. 

    Clean up - There are orphan files that could be removed.

    Unsigned files - There are unsigned software files installed. Apple has said that unsigned software will not run by default in a future version of the operating system.

    32-bit Apps - This machine has 32-bits apps will not work on current versions of the operating system.

    Kernel extensions present - This machine has kernel extensions that may not work in the future.

Hardware Information:

    iMac (27-inch, Late 2012)

    iMac Model: iMac13,2

    2.90 GHz Quad-Core Intel Core i5 (i5-3470S) CPU: 4-core

    16 GB RAM - Upgradeable

        BANK 0/DIMM0 - 8 GB DDR3 1600 

        BANK 1/DIMM0 - 8 GB DDR3 1600 

        BANK 0/DIMM1 - Empty 

        BANK 1/DIMM1 - Empty 

Video Information:

    NVIDIA GeForce GTX 660M - VRAM: 512 MB

        iMac 2048 x 1152