Rendering – S3 Metal support

If you’ve selected S3 Metal support then set it as follows. NOTE – S3 based graphics cards owners as recommended to install the latest drivers for their particular graphics cards.

Coronas. Set this to True. This is the haze of light that appears around light sources in the game, such as torches in the game. Set it to False if you really need extra performance.

DetailTextures. A detail texture is a very small, fine pattern which is faded in as you approach a surface, for example wood grain, or imperfections in stone. Set this to True for improved visual quality, although it may cause a performance hit on some graphics cards.

Set it to False for increased performance. You can use the LodPercentage setting to adjust the range at which detail textures are applied.

Enable32BitZ. This setting is set to False by default. If you are experiencing flickering world surfaces & similar visual corruption when running in 16-bit color set this to True. This  forces the use of a 32-bit Z buffer (even in 16-bit colour) which should fix these display errors if they are occurring. You may ignore this setting if you experience no such errors or are running in 32-bit color.

EnableFastFlashblend. Set this to True to improve performance, setting it to False will improve visual quality.

HighDetailActors. Set this to True for better visuals. Setting it to False will improve performance.

ShinySurfaces. Shiny surfaces are the reflective surfaces in the game, e.g. On some floors you can see your reflection. Setting it to False will improve your frame rate in such areas. I’d recommend setting it to False.

VolumetricLighting. Set this to True for better visuals (effects like fog), although with lower performance. Setting this to False will result in a big frame rate increase. On most graphics cards that have trouble running Unreal setting this to False along with DetailTextures to False will mean the difference between a playable & an unplayable game.