Be sure that the game is supported by the Catalyst driver that you have installed. Meaning, that there are no significant compatibility issues between the game and a particular driver release. This is more common with new game titles released between driver versions.
In your particular case with Diablo3 in mind, CAP 12.7 will work with Catalyst 12.4.
AMD Customer Care
The information presented in this do*****ent is for informational purposes only and may contain technical inaccuracies, omissions and typographical errors. Links to third party sites are for convenience only, and no endorsement is implied.