Last night to further eliminate outside cause for the coil whine/buzzing when in game. I disconnected the USB 2.0 and USB 3.0 connectors for the Case, Disconnected my AIO and dropped my Dark Rock Pro 4 air cooler back in so I was only running the internal PC components, mouse, keyboard and monitor.
For the first test I connected to my Furman S5500 and kept the PC and monitor on separate banks and for the second test only the PC connected to the Furman and the monitor plugged directly into the wall.
In both cases the HX1000i is completely silent until I launched a game. As soon as I am in game playing the coil whine/buzzing starts.
Am I missing any other variables?
Despite my best efforts, unfortunately it keeps coming back to the HX1000i being the root cause of the coil whine buzzing problem.
Thanks for the responses and suggestions.