AMD 13.11 beta 9.4 just released which has optimizations for this game listed.
Feature Highlights of The AMD Catalyst 13.11 Beta9.4 Driver for Windows
- Includes all Feature Highlights of The AMD Catalyst 13.11 Beta9.2 Driver
- May resolve intermittent black screens or display loss observed on some AMD Radeon™ R9 290X and AMD Radeon R9 290 graphics cards
- Improves AMD CrossFire™ scaling in the multi-player portion of Call of Duty®: Ghosts
- AMD Enduro Technology Profile updates:
- XCOM: Enemy Unknown
- Need for Speed Rivals