I have a 2014 Mac Mini (2.6GHz Core i5). It is connected to my NAD T775HD receiver through HDMI. My NAD HDMI output is connected to my projector. I connect to my mac mini using VNC on my iPhone or screen sharing app on the iMac. Never have problems with this whether my receiver is on or not. Typically I have the receiver turned on if I am going to listen to music since I use HDMI to receiver for audio. But at other times, when I have to just perform some tasks, I do screen sharing to the Mac Mini from my older iMac.