The last few drivers reintroduced the high core clock at idle/desktop issue.
144hz G-Sync main monitor
60hz secondary monitor
GTX 1070
Win 10
This driver and the last couple idle/desktop core clock sits at ~1100mhz.
With GPUz open and running. As soon as rollback installation of 372.54 (or maybe 372.70, cant remember which one) completes, the core drops to 139mhz. As soon as I reinstall 375.63... 1100mhz idle.
Yes, changing the 144hz to 120hz "solves" it but... C'Mon! And I know they can fix it because it was broken, then for 3 or 4 driver versions it worked super, then didnt work again.
Also, it seems like Enabling g-sync no longer acts like v-sync by capping my FPS when I hit 144. A few versions ago I did not have to enable v-sync in game. Specifically Diablo 3. If G-Sync was enabled, I would never exceed 144fps. I don't think I really need to run at 250fps.