Save Times

So when saving after adding album art, it can take anywhere from a couple of seconds to two to three minutes. I delete all tags before adding album art.

Why the difference in saving?

Dale

Depends how much extra space was originally written in the tags. If enough, adding art is very fast, if not enough, then the program has to rewrite all he tags to add the extra space.

And also it depends on the cache - if the hdd led is contantly lit then some other activity blocks the fast access to the hdd... and so on.
Also it depends on the size of a file and (as you said) how much padding was left.