As soon as layout gets complicated the WPF becomes slow, any UI animation is out of the question, and there are famous random System.Windows.Media.Composition.DUCE.Channel.SyncFlush() and other Render Thread failures, that Microsoft never fixed. How is the UWP in this regard? I have spent years building complicated WPF program only to realize that adding any additional element with a binding in a ListViewItemTemplate would slow down scrolling exponentially. How much better is the rendering in UWP compared to WPF?