Why does CoH run slower with shader quality set to Direct3D 10 instead of High?
A. CoH is not simple port to the Direct3D 10 API from the Direct3D 9 API, it was planned from the start to add many significant new features and improvements. Just as the additional calculations required by the features enabled in high shader quality mode (Pixel Shader 2.0/3.0) make CoH run slower than in low shader quality (Pixel Shader 1.1) the additional calculations of all new advanced Direct3D 10 features cause each frame to take slightly longer to render. Keep an eye on your favourite graphic card vendor’s web site for new driver releases offering improved performance.
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