I manage a website where the owner categorizes everything via taxonomy. However, he's extremely detailed when it comes to categorizing things. He has 1073 taxonomy terms, about 1000 of which are in one single vocabulary. The node edit screen takes 10-15 seconds to load!
I've told him he needs to consolidate but he's not going to.
Does anybody have any advice for performance tuning? Changing to the ajax autocomplete control isn't an option because he needs to be able to see the hierarchy.