Animation smoothness "suffered" after 2.7.9

I’m using spaces with Expose, and there is a noticeable lag after selecting a window in one of the spaces, that was introduced in versions after 2.7.9 - I know as with all things animation related, this is probably something thats addressed least likely, but if you could look into it - previous versions of total spaces just were less choppy feeling.

(High res backgrounds chosen to be shown, if that matters.)

Thank you.