Originally Posted by macropod

Hi Jamal,

The issue only affects TOCs created via the Gallery. Word has to do a lot of work behind the scenes to maintain a TOC field. For example, in addition to the formatting, for which every line has a Style to apply, every line contains two other fields - a HYPERLINK field and a PAGEREF field.

I don't notice any slowdown scrolling through your attachment, but some slowdown might occur in the full document if it has many pages and graphics - especially graphics. A lot of processing effort is required to render a multi-page document that has many graphics.