I have noticed that when deleting a folder on Filezilla it can take a very long time if the folder has subfolders with many files, example I deleted a .git repository / folder and it took Filezilla 15 minutes.
However, with a hosting account and their FTP manager you can delete a folder and it is immediately removed including all files and sub folders.
Why the difference. Is there a setting for Filezilla that can speed this up.