Mid 2015 MBP Issues

So I bought a Mid 2015 i7 MBP and went through the OCLP up to Sonoma 14.7.5 and everything was great for a few weeks until this morning.

The system is really sluggish and not doing simple things like displaying the wallpaper.

It is also saying I can take the OTA update to Sequoia.

Questions

  • Any reason why is should just go off a cliff performance wise
    • I have uninstalled the last few apps I added just in case (GDrive add-in and Sheets\Docs)
  • Can I take the OTA or would I need to go through the OCLP path for Update to Sequoia to see if it would fix it?
Author: @Photek1000