Comment 10 for bug 1004251

Maybe this is of interest for you.
I have noticed that suddenly compiz/unity is much smoother. My observation is not about FPS but more about how frequent the frames make it on screen. Video playback in xbmc is much smoother with 25FPS (monitor at 50Hz).
In the past I had every few seconds stuttering but now it seems to be gone.

I am not 100% sure but the proposed mesa update in combination with proposed unity made the difference for me.
I changed no settings in unity or compiz.

xserver-xorg-video-intel: 2:2.19.0-0ubuntu1~xup1
libgl1-mesa-dri: 8.0.2-0ubuntu3.1
unity: 5.12-0ubuntu1.1
compiz: 1:0.9.7.8-0ubuntu1
linux: 3.4.0-030400-generic