Hi, mastiph I am getting the performance issues using shadows, or emissive as well. Like if I inherit from le_game to use textures and create an entity that's a child of le_game, I get a serious performance drop. When I mouse over the blue marker where the drop happens (when I created two instances of such an object, see below for what it does, create a sufrace, and free a surface...no idea what is happening there, perhaps badwrong can shed more light.
I have no issues having hundreds of lights on screen at once however. Yes it taxes more, but not like how only two instances of the object which inherit from le_game do as per the screenshots below!
I am on a 5600x with no integrated graphics, only 3080 graphcis card.