Comment 5 for bug 863192

By the way, it is completely related to the small bright on pinned tabs when notification any update in the page. Once you put the focus on that tabs, Compiz goes back to a normal CPU consume.

Depending on how many cores or threaded-cores you have in your computer, you can see different CPU use (25, 50, ... 100%).

Another behavior that might be related, it's that exposing the windows works perfectly for every window but Chrome, where I usually get a white rectangle.