IL2 BoB - settings

[T-JETTer]

Look there ProcessAffinityMask option in section [rts]
Remove the sign ; in front of him.

And exposes its value in accordance with the number of cores a processor, namely:
2 cores - 3
3 core - 7
4 cores - 15
6 cores - 63
8 cores - 255

In my case (Core i5-750) 4 core - put 15. Conclusion: The uniform loading of all cores. In a game where everything is - friezes are but minor.