So would 15 plus aircraft in the area without choking.
Han mentioned some potential solutions in the Questions section. Since even people with overclocked Skylakes are having FPS trouble
One is making the distant AI SFM and only the closer ones AFM
He also mentioned the idea of creating a separate CPU thread for physics
And about DX11
"Actually, DX11 do not provide MANY advantages. We use DX9 possibilities so wide and full that iy will be hard to determine difference when we will switch to DX11. But we have it in mind anyway."