This patch will make it so lighting only has to be processed the first time you load a map. The data is saved to a .lit file, associated with the .3dw map. If the number of entities or lights in the file changes, lights will be reprocessed. You can also just delete the .lit file to reset lighting.
I included the two .lit files for you, so the maps will load much faster:
http://www.leadwerks.com/files/enginepatch1.zip
I included the two .lit files for you, so the maps will load much faster:
http://www.leadwerks.com/files/enginepatch1.zip