Yes, yes it does waste credits.
The bulk process automatically makes webp files out of the server cache jpegs, so you have to tell it to exclude these folders.
There is no mention of that in the batch process, so for hours the batch processes the cache files using up 1000 of credits on dozens of copies of the same photo, on top of the thumbnails images it has already cached.
Maybe that would be fine for some people but it doesn’t work with NextGen gallery. Ive had it on my site for weeks now and have not been able to served webp images in lightbox or gallery. Now I also have all these extra webp files that are taking up space on my sever doing nothing.
The plugin is not simple solution, and it doesn’t provide meaningful insight into improvements or documentation about compatibility with or without other plugins and I
