Good afternoon!
Could it be weather related? Do you live in a part of the country that is getting hammered right now with snow or rain? Occasionally when we get the big freeze, and wind, and snow in our area, our internet gets reeeaaaalllly slow and spotty (sometimes it goes down altogether--maybe I should switch internet companies? lol.) But when the internet is running fine, I have no issues with the site or any others. I haven't experienced problems with the item specifics either. ?
This won't help you, but I haven't been having any issues with uploading pictures at all since I started here several months ago. I was just working on my new years listings and uploaded close to 50 pictures (200+kb each) in about a minute. Sorry you are having problems, though!
You might contact the support help and see if they know of any reason why the slowness isn't happening to everyone?