So every now and then Skyrim decides to go mental and delay a blood splatter or a firepot explosion or an arrow or a door opening.

It seems like the "trigger" for these events is delayed for some wierd reason.

What could be causing this?

I have an HD6850 Phenom II X4 3.4GHz and 4GB Ram
I run the game on ultra apart from having no AA and High Shadows (instead of Ultra shadows).

Why would this be happening?