Volumetric Lighting: Determines whether sunbeams (ie, God rays) are cast. Disabling boosts framerates by 3 percent.
Spot Shadow Detail: Affects the detail of shadows cast by point lights in the environment (ie, not the sun or global illumination). high improves performance about 3 percent. Sun Shadow Detail: As opposed to the amount of sun shadows, this controls the detail of the sun shadows. Setting to low instead of high boosts framerates about 5 percent. Sun Shadow Coverage: Appears to control the amount of shadows from the sun, probably some form of global illumination. Dropping from high to disabled improves performance by about 15 percent. Usually this doesn't affect performance much on modern GPUs, but switching from 16x anisotropic filtering to bilinear filtering improved performance about 6 percent.Īmbient Occlusion Quality: This setting affects performance the most, and it affects the quality of SSAO (the shadows in corners and such). Texture Filtering: Affects the sharpness of texture details and the transition between different MIPMAP levels. Dropping from Insane to None improved performance by around 6 percent. You can set this anywhere between None and Insane (8GB), though settings beyond high recommend having at least 16GB of system RAM. Texture Streaming Budget: Despite the 'streaming' part of the name, this just appears to be texture quality or resolution.
