I was having severe stutters and extremely low FPS with my crossfire setup. Creating a custom crossfire profile greatly improved this to the levels before the patch or even better! I am using 12.4 drivers with the latest CAP.

With this tweak I am seeing ~75% improvement in FPS and a significant reduction of stuttering!

1. Open CCC, click on 3D Application Settings, and scroll down to the section called “AMD CrossFire Mode for 3D Applications”. Select option: “Use AMD Pre-defined Profile”.

2. SelectLostPlanetDx10.exe application profile.

3. Scroll back up to the top of the Application Profiles section and click <<New Application>> and Save.

4. Find COD folder “C:\Program Files (x86)\Steam\steamapps\common\il-2 sturmovik cliffs of dover” and open Launcher.exe.

5. The new profile will look like this. (It may help to reboot.)