Hello, @slw250@hotmail.com,
Actually, by default WordPress generates different sizes of images for different resolutions. Here I found an article to understand it better and to know how to fix it: https://www.wpbeginner.com/wp-tutorials/how-to-prevent-wordpress-from-generating-image-sizes/
Please check and read the article for a better reference. I hope it helps.
Regards 8Themes Team.
