I noticed an intresting thing yesterday. I have a A10-7850k computer with 8 gig of ram that i have been using for developement and for some DOTA2 gaming with my wife. I was running on Ubuntu 14.04 and I got pretty decent perfomance, I ran it at 1680x1050 with medium settings.
Then a friend of mine convinced me to try out Sabayon since the perfomance was much better. So I got curios and installed Sabayon (which was very easy and I got AMD Catalyst out of the box ).
And now I am gaming on 1920x1080 and high details and I get about ~5fps more than on Ubuntu. And i have no problems with 2D tearing and stuff I had on Ubuntu. I am very suprised and very happy.