MacBook Retina 15” 2015 Sonoma - fails login after 14.2.1 update

My MacBook was running OCLP and Sonoma just fine. Then I installed the latest MacOS update. Now at boot the fans are screaming and the system is almost non-responsive. Login screen (no image tho) comes up but I can’t login. Mouse moves are jerky, typing the password is incredibly slow. Trying to boot into safe mode fails. (Tried holding each Shift key down at power on.)

Any suggestions?

submitted by /u/mike-foley
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