After macOS Sonoma upgrade issue
After macOS Sonoma upgrade all mac book systems are slow and hanging issue.
Question marked as
An OS upgrade may trigger the Mac to reindex the drive(s) for the best Spotlight performance afterward. The Photos app may also do some work with the photo library. It's not uncommon for these chores to take several hours. Leave the computer turned on and running for a day and reevaluate the performance again later.