I uninstalled Hookmark because it was using 100% CPU consistently and running the fans full throttle. I don’t see what I missed, but I still get a window showing up asking me to choose an application for “Hook” (not Hookmark).
Sorry for the delay. We are activity working on. Is there any other processes or programs that modify folders and files at the same time? If so, please try to stop these programs. You can use Activity Monitor → Disk to see how heavy the disk is being accessed.