@Daniel: I'm also looking into which package solved my problem. But maybe I was suffering from two bugs.
Adding the compiz PPA smoothened my whole desktop experience a lot (but introduced the flickers as I was talking about), the unity PPA helped lowered my compiz usage and GPU temp. I'm not a lot at my laptop this week, so that's causing the delay. Didn't do much so, the changes were more subtle. I also reverted my Catalyst driver back to 11.8 for a better comparison. I will get back when I'm entirely sure.
@Daniel: I'm also looking into which package solved my problem. But maybe I was suffering from two bugs.
Adding the compiz PPA smoothened my whole desktop experience a lot (but introduced the flickers as I was talking about), the unity PPA helped lowered my compiz usage and GPU temp. I'm not a lot at my laptop this week, so that's causing the delay. Didn't do much so, the changes were more subtle. I also reverted my Catalyst driver back to 11.8 for a better comparison. I will get back when I'm entirely sure.