By default, the scroll view's panel will not cull its content as you're dragging stuff, so while you are dragging the scroll view, you are drawing all 100 of your items. This actually improves performance over culling, as you don't need to do any additional math checks to see if something is visible or not. Scroll view's content buffers are also not changing while scrolling. However if you have a scroll bar, it will be changing, which will also cause the panel it's on to re-create its buffers, which is expensive. This is why I placed the scroll bar underneath its own panel in the scroll view example.