Bah, well I can confirm the issue on my end as well then, I haven't payed any attention to it as of late, but I guess one of the updates borked whatever fix was offered as idle temps do stay up with 144Hz enabled and drops down to 100MHz as soon as I switch to 120Hz or lower. I don't remember which driver it was that fixed it as it was several driver versions ago.
So now I'm confused. Is this a hardware issue, or a driver issue? I can confirm that when I run one monitor at 144hz nothing changes, but when I enable the second one (60hz. I read that running two monitors at different refresh rates causes this problem, but I have no way of testing this) both core and memory clocks bump up to pretty much max -_-
To simplify this.
One monitor running at 144hz core/memory clocks idle fine
Two monitors running at 60hz core/memory clocks idle fine
One monitor running at 60hz and one running at 120hz core/memory clocks idle fine
One monitor running at 60hz and one running at 144hz core/memory clocks bump up to almost max
Anyone have any insight on this?