I bought a new Denon X3300W and everything with 4K output and HD audio works great coming from my Shield, but as I am scrolling through apps the system sounds aren't normal. The sounds fluctuate if you move from one icon to the next quickly. Its only a small annoyance but if anyone knows how to fix this please comment. I have tried with all 3 surround settings and for now I have left it to ALWAYS since the receiver can handle all types.