Data-Virtualization issue with SurfaceScrollViewer

I'm in a situation where I'm using an ItemsControl with a SurfaceScrollViewer bound to an AsyncVirtualizingCollection and all of the data is being requested. I'm aware that it's 开发者_开发问答due to the ItemsControl request all of the data but I'm not sure how to get around this.

I've tried the AsyncVirtualizingCollection bound to a ListBox and it works fine and I'm now attempting to having it bound to a SurfaceListBox but the problem persists.

Any ideas of how to overcome this?