Arralen did you tried to disable vertical sync in OpenGL? Maybe that will help as well.
[It is on by default.] Also use the latest NVidia drivers.
Also one more utility to fix this:
http://www.pagehosting.co.uk/rf/
It wont mess up anything, trust me. Very simple way to solve this little problem.
[ October 31, 2003, 12:31: Message edited by: Mortifer ]