Hi @asasergey,
I don’t notice it in Edge but maybe because I have a fairly fast connection. Could it be that Edge is trying to determine the speed of the user and serving the best image for the situation?
The reason we added this change was that because people want to have large images on desktop, but then on a mobile device the image is a waste of pixels and lowers performance (and possibly SEO). Novice users will even upload images 10mb+
If Edge eventually loads the higher def image anyway, it might not be something we can address as the benefit of offering the lower res image is more beneficial to everyone.
Also to note, this feature is only on slideshows where cropping is disabled. So you could use the smart crop and crop your images outside of the MetaSlider if it’s an issue.