I have a lot of lights but they drops framerate

Hi, I’m making a spaceship, so I need lights, my problem is that I have 1/2 lights per room, set to “important” (bacause otherwise the walls won’t be affected), so I noticed that when there are 1/2 lights in the screen i have 15/20 fps, but when there are not I have 30/50 fps, what parameters of lights make slow down the game? What could I do to avoid it?

If you are using Unity Pro you can try switching your Rendering Path to Deferred Lighting under PlayerSettings.

See here also: Unity - Manual: Rendering paths in the Built-in Render Pipeline