Media library upload multiple files

If you’re needing to upload large numbers of files, or files that are quite large, it might make more sense to upload via FTP. This does involve the extra step of installing a plugin in order to ‘register’ the files with WordPress.

I’ve found two good descriptions on how to do this here: https://kinsta.com/knowledgebase/bulk-upload-files-wordpress-media-library-ftp/
and here: https://www.wpbeginner.com/plugins/how-to-bulk-upload-wordpress-media-files-using-ftp/

If its not large numbers of files or very large files that makes the built in uploading problematic, could you tell us why it’s important the files to upload in parallel?