Duplicate images in WP Gallery

My media library keeps adding duplicate files – they will be scaled versions of the file I am uploading.
File name: MCM-Walnut-Side-Tables-description-12-scaled.jpg is one of over 12 of the same original MCM-Walnut-Side-Tables-description.jpg.

I have Smush installed. I don’t know if it is the culprit. What I have found is if I try and edit the photos while they are uploading, it definitely triggers more duplicates.
I have tried uploading from my products page (WooCommerce) and it seems worse. Sometimes I get duplicates there that don’t show up in the gallery view. I have tried using just the gallery and not touching my computer while the photos upload. This helps a bit, but not always. I delete what I can, but occasionally I will set one of the duplicates as the image I want, and then, of course once I delete it, it’s gone. If it is the main image this causes other headaches (my Facebook shop doesn’t have a main image, nor does my website shop).
I can’t say how long this has been happening, but for several months. I am tired of it…
I have seen the suggestion to turn off all plugins and then turn them back on and upload photos each time I turn one on, plus backing up my site first. I hope to find someone who can suggest one of the plugins that may be causing this. I will start with Smush, but then I wonder if I am going to run into issue with too large of a file?… Not a programer, so please excuse my explanation.