Alright so this one I managed to solve. By adding a size=”medium500″ to the shortcode attributes the images are now loaded properly and no longer grainy.
However a small piece of advice as this was slightly confusing, perhaps it would be better to add the “size” choice under the source choice. Instead of on a seperate tab which can easily be overseen. Or a notation in the shortcode generator not to forget to set the size?
Just a little advice, Anyway this problem is solved.
