Have you tried Luthiers suggestion??.
Here it is: -
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Note about NVidia SLI:
The patch must go through official NVidia accreditation for SLI support to be officially enabled in drivers. The patch will only go through the process once it’s officially released on steam.
If you wish to bypass this process and manually enable SLI support, please go through the following steps:
1) Download a profiler utility, for example
http://nvworld.ru/utilities/sliprofiletool/
2) Export SLI profiles to a file
3) Manually edit the file by adding the following lines
Code:
Profile "Il2: Cliffs of Dover"
ShowOn GeForce
ProfileType Application
Executable " il-2 sturmovik cliffs of dover/Launcher.exe"
Setting ID_0x00a06946 = 0x000240f5
Setting ID_0x1033cec1 = 0x00000001
Setting ID_0x1033cec2 = 0x00000002
Setting ID_0x1033dcd2 = 0x00000004
Setting ID_0x1033dcd3 = 0x00000004
Setting ID_0x1095def8 = 0x00000004
EndProfile4) Re-import the file
5) Fly!
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I have this working and find it better than my old profile.
If you have trouble getting the code into the Nvidia inspector I will try and talk you through it. You will need Nvidia Inspector to do the job, this is a free download.
You can get it here: -
http://downloads.guru3d.com/NVIDIA-I...load-2612.html