Hi, I have question regarding layers in koto. Because our app has grown to bigger size we need to deal with slow performance issue. This app is sort of gantt chart with plenty of rectangles, labels and other stuff. We decided to keep 4 different layers agregated by content. My question is how to avoid redrawing all those things if we need to redraw only one small part? Everytime app is drawed all layers merge all theirs content. Would be the best if could you provide some example. Thank you in advance.