Why does Monterey mac OS keep freezing ?Make a Malware check. If resetting the NVRAM didn't help you unfreeze macOS Monterey, you should run a virus or malware scan. After all, slowness and freezing on the Mac is a regular symptom. If malware is discovered, delete it by following the on-screen instructions. Complete Solutions to troubleshoot Intel Mac freezes on Monterey mac os freezing- restart your PC etc.