I have a 3080 and mine does kind of the same
I also cap at 60fps
I noticed that coil whine usually disarear if I use the unlit mode
After a while it stops, it seems something that the card does when it’s cold
Doesn’t happen all the time, now I am working on another project and it never coil whines
I also wish to power cap UE because most of the time I don’t need that much power and in general coil whine is very annoying, not to mention, more power more hot air in the room.