In Monterey, my system becomes unresponsive when running Big Sur in a virtual machine

Discussion in 'macOS Guest OS Discussion' started by bertboot, Nov 8, 2021.

  1. bertboot

    bertboot Bit Poster

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    Since upgrading to Monterey (12.0.1) my system (Macbook Pro 2018 running Parallels 17.1) becomes very unresponsive when running Big Sur (11.1) in a virtual machine. Big Sur uses about 10% - 20% CPU in total according to its own Activity monitor, but in Montery, the virtual machine Big Sur takes up between 50% - 100% CPU.

    The system responds very badly to mouse input and keyboard input (missing many characters). I have reinstalled Parallels Tools and restarted, but nothing helps. I had to change the hypervisor to Apple (Big Sur virtual machine > Setttings > Hardware > Advanced > Hypervisor > Apple), because with the Parallels hypervisor, the virtual machine crashes.
     
  2. bertboot

    bertboot Bit Poster

    Messages:
    4
    Catalina 10.15.7 runs very well as a virtual machine under Monterey.
     

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