Slow Macbook due to a process shown in activity monitor

First , with only 4GB RAM you do not have the resources to run Google Chrome. Add up how much Memory Chrome and its minions are using in that screenshot alone. It is too much. Chrome is a know resource hog on both Macs and Windows computers.

Here is the story on "Folder Actions Dispatcher" and how to deal with it:

https://www.macissues.com/2015/01/30/fix-folder-actions-dispatcher-using-high-cpu-in-yosemite/

However, before doing anything, I would restart the computer. The fact that you 3GB swaps for only 4GB RAM suggests to me the computer has not been restarted in weeks or months. With low installed RAM, think about restating the computer once a week. That clears out a lot of junk and cleans some caches and log files.