After reading through some of this thread:
Use vsync! (via graphics drivers) it does more than just resolve screen tearing. It organizes frame buffers and is particularly effective with tri-buffering (which most cards have now), it smooths out all 3d graphics and maximizes GFX efficiency ... I would also avoid third party GFX software, as it adds a layer of unnecessary complexity. At least thoroughly (and with reproducibility) test behaviors and effects before swearing by disabling vsync and running GFX add-ons.
But what kind of vsync? Standard? Adaptive? Adaptive half-refresh? And none of them are able to prevent tearing for me in Skyrim.
I think I will just go back to what I had and accept the wierd numbers.