You may sometimes encounter issues with your Mac Finder after upgrading to macOS Catalina (10.15). It may sometimes become very slow and unresponsive until it crashes and sometimes you may notice it has a high CPU usage.

Many Mac users encounter this kind of problem after updating Mac to the latest MacOS. Fortunately, the issues seen with Finder are generally very easy to resolve.

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If Finder is very slow
If Finder is unresponsive