For some reason V-sync is enabled by default on skyrim.
Disable v-sync by editing /users/yourname/mydocuments/mygames/skyrim/skyrim.ini
add the line iPresentInterval=0 under display.
However since skyrim is one of the very few games not capable of handling no-V-sync.
Download the FPS limit mod from nexus(very easy just copy 2 files into skyrim folder).
Then open the antilag file and enter your max PFS depending on your monitor.
Both have to be done because only disabling V-sync will cause some glitches in skyrim that are very well known.
Its a shame that Bethesda could have fixed it even better,
and probably in under an hour.