ATI continually improved their driver by releasing hotfix and improved gameplay experience for Far Cry 2 and Stalker Clear Sky.
The Hotfix particularly address the following issues:
Improves performance for the DirectX 9 version of Far Cry 2 on CrossFire™ compatible systems
Improves performance for the DirectX 10 version of Far Cry 2 on both single and CrossFire™ [...]
