il2 1946 4.08m vs radeon hd3850

[sanyigz]

I set processaffinity, to 0 maybe there is a little more performance, but still the minimum fps is at 18fps in some pacific island carreer missions, what is very annoying when drops to it.
If i turn on shader 3 water, then the minimum fps drops more, to about 10 fps.
And if there are a lots of bullets flying near me (fe AA ship, or aircraft carrier ship anti aircraft defence), sometimes i can see various colored squares near the

I'm use catalyst 8.8.

I have pcie 3850