Hello, at this time of night I have also discovered to have coil whine if I put the pc at high performance ....
with the silence you can hear and it is quite annoying ...
To make a long story short, with high-performance profile I have coil whine ALWAYS. With medium profile, I avoid the coil whine only if I put a maximum CPU usage about 99%: in this way, Windows never lets the cores go beyond 2095 MHz and therefore no coil whine ...
What a shame Asus ...