Hi, I have a Sony STR-DH520 and I started using the ARC. I have been using an optical cable but wanted to give this a shot and see if it would fix some DTS playback issues with my TV. It works greats and works with every input but when I switch over to my HDMI 2 input that has my Xbox on it, the Receiver switches back to my TV input on its own. It wont stay on the HDMI 2. If i switch it back to HDMI 2 over and over, every so often it will stick and stay. If I turn off Control HDMI I have no problems. But with Control HDMI on it keeps having this problem. I switched my xbox to a different input and didn't have any problems so it's just with HDMI 2. Anyone have any ideas why my receiver refuses to use HDMI 2 with Control HDMI on?