There’s a thread active right now one batching, instancing and other mechanics to improve performance for high element count scenes. Optimizing forest framerate - #4 by 8Keep123
Sure you can. Make sure to go through the tutorials if the controller-based approach suits you better - there should be lots of examples doing this. I myself find the ES and data driven design incredibly intuitive and easy to work with (in my mind its way easier than the object oriented approach), but - whatever works for you, go for it.