Dynamic shadows from the lantern MOD

[Your Computer]

In any engine it could effect performance, especially if the scene needs to be rendered multiple times just for the lights and shadows for one frame. Then there's the quality of the shadows which can hurt performance as well. HPL3 might have dynamic shadows for point lights, but i'm not sure on that. In any case, if you want dynamic shadows for the lantern, you'll need to manually edit a few files.