Originally Posted by DoctorOhh
Look a little closer. he was referring to metadata updates not metadata downloads.
Ah I understand. Turning of the tag browser does indeed make a big difference in this regard, in the GUI at least although I love the tag browser.
Kovid Goyal explained to me that the tag browser took a lot of time to update every time a field was changed. Even with the tag browser off though it takes a long time to do a bulk metadata change of even one field in two records, so there is something else in play here.