Somewhere Between Smush and Marketpress, I am getting a problem of large images being re-created after deleting them. they are names 1024x1024 - which at one time I had large images set for that, but have changed the largest image size in the network to 600x900. After I did that on ALL SITES in the network, I went through and methodically deleted ALL 1024 images from updloads in both the dated folders and the sites folders. So, when I was done, I checked to see if my hummingbird score improved, and it said the images were still there. So I looked, and the images that are marketpress product images, are re-created in the current date's folders at 1024. They arent even 1025 px when i upload them. I can't find a setting anywhere that would be causing this.
I have ALSO, gone to each site, re-created thumbnails of every image, making sure only the 3 sizes we're using are checked in doing so. And THEN, re-checked each site with smush, having added the max image size as 600x900, and enabling super-smush, then re-smushing everything...then RE-DELETING all the 1024 images...which then after mere minutes, re-appear.
And I know that's not a cache echo or anything, because I am deleting them via FTP.
Any suggestions on how to once and for all kill the larger images that it seems like Marketpress is responsible for, because it is only product images that are re-creating.