Originally Posted by slaWter
SSAO is the most useless modern graphics feature anyway. It's only really noticeable on side-by-side screenshots but it always tanks the framerate. It's the only thing I disable in games, it's simply not worth it in my opinion.
You might not think it's worth the performance hit, but it's far from worthless and has a bigger impact on how games look than just about any other setting you can use in your drivers and it's easily noticeable in-game.