As an update to this - I was having this issue after the update. it has to do with core isolation. Once I disabled Core Isolation, all my utilities worked. CPU-Z, FanControl, HWInfo, and Corsair iCUE on my system were all not working. But after disabling CI, all are working again.
Gaming is a completely different load than stress testing though. I've never seen a game put the load on a system that a stress test does. There's no comparison.
ATX Standard specifies that the 12V rail should not go lower than 11.4V, nor higher than 12.6V. Your PSU is either not sufficient for the load placed on it, or is failing. At 11.2 V the voltage regulators will be struggling to provide clean power to various parts of the machine. I bet if you...
I've got an Asus X570-P (BIOS 2812) with a Ryzen 5950X. I noticed that when I run HWInf0 (4.34) I don't see any power draw under the CPU. I have cleared all preferences and reinstalled HWI to make sure that I haven't hid anything.