How can world of tanks's game screen be black and obviously darkened?

I feel that the graphics card is a bit hard, and it is recommended to improve the picture quality; High texture; The shadow is low, the ground is medium or low, and the water surface is low. Under the light, the tree quality is turned off, the shrub is turned off, the additional effect is medium, the later rendering is low or turned off, the visual field distance is medium, LOD and blocking mode are turned off, all four checkmarks are unchecked, and the top anti-aliasing is turned off vertically, three times. Just try it.