I got Emacs from the main GNU ftp server (http://ftp.gnu.org/gnu/emacs/windows/). The org file isn't that big. It has 500 lines and only headings, some text and Lisp Babel blocks.
Today I tried it again at home and at work and Emacs was behaving normal without any lagging. Seems it was only a temporary issue probably because of the current Windows session. Could be a similar problem as Sivaram mentioned. Best regards, Daniel -- Daniel Hannaske
