Stop refreshing the page thumbnails
When I have the Page Thumbnails sidebar open and I switch between different open PDFs Acrobat refreshes the whole thing, including all the pages which can be slow and locks-up the whole UI. Why can't it cache the thumbnails when I switch between documents? It becomes very painful if I have a long PDF with 100+ pages in.
(Moderator: Please change the title on my report to "Stop refreshing the page thumbnails")