helium3 on "[Plugin: Media Library Assistant] Responsive Images"

Hi David,
I am troubleshooting an issue with responsive images not being served. I see in my source code <img aria-describedby="mla_gallery-1-1325" width="601" height="900" ... /> I wonder if this size is possibly being forced by MLA, and if so how to override this so that width and height are not being output and srcset can serve smaller size when possible?
Thanks!

https://wordpress.org/plugins/media-library-assistant/