Settings used by Globe Overlay objects. These setting affect all scenes.

ImageryCacheSize	Gets or sets the size of the imagery cache in megabytes. It is not recommended to go above 128 megabytes. Large cache sizes can slow down rendering since so much imagery will be rendered.
PreloadTerrainAndImagery	Gets or sets whether terrain and imagery are preloaded. When set to true, terrain and imagery are preloaded to get the best visual quality; when set to false, they are not preloaded. For example, the correct resolution globe may not fully load until you stop moving the cursor, but you will be able to move more smoothly around the 3D graphics window.
TerrainCacheSize	Gets or sets the size of the terrain cache in megabytes. It is not recommended to go above 128 megabytes. Large cache sizes can slow down rendering since so much imagery will be rendered.
UsePerPixelLighting	Gets or sets whether per-pixel lighting is used for terrain and imagery. When set to true, per-pixel lighting is used for the best visual quality; when set to false, per vertex-lighting is used, which may provide better performance on older GPUs, but worse visual quality. The default value is true.

Globe Overlays