That’s a vague question, light building time depends on the software, hardware, and the type of content (how much memory the textures use, how much geometry, how many lights, what types of lights, how big is the map)
That’s a vague question, light building time depends on the software, hardware, and the type of content (how much memory the textures use, how much geometry, how many lights, what types of lights, how big is the map)