The folks updating our site oft complained about the media browser being very slow, so I went to have a look.
And, on the first load of the page, and when doing a search within the media browser, its taking a while to download each of the image previews, even longer than it should on our shonky office broadband.
So, I inspected the source of the page, and it became clear. Each image thumbnail is actually linking to the full size image, and resizing it in HTML, see:
Is this an issue anyone's aware of? Is there a workaround? I'd presume there should be a built in thumbnail type for that purpose.