If "GPU VR VDDC Temperature" and "GPU VR MVDD Temperature" are not shown at startup, then they do not appear until launched.
But there is a way to activate them
1. Run the HWiNFO
2. Send PC to sleep
3. Wake up
Yes, I played for several hours in different games, the values for a spinning fan slightly change (maximum I saw three identical values when the fan was spinning, ex. 1430, 1421, 1421, 1421, 1402, 1416)
For more reliability, I can activate the log in HWiNFO and send the result to you. With marks...
This is madness...
I made many attempts to trace the dependence of the FAN RPM sensor and the start / stop of the fans.
after stopping the fan, the sensor sometimes shows high value it is (1715 rpm), but it can show a value between 1350 ... 1700 rpm
So either wait for the fix in the AMD or VGA...
It seems to me that a similar trick is used by the GPU-Z. When it starts up, it also for a second shows 1350 rpm, but then adjusts the indicators to 0 rpm.
I open ticket in sapphire tech support, maybe they will offer a solution (for example a new version of BIOS)
the first attempt to fail during the launch of HWiNFO, the computer hung with a black screen and noisy at maximum RPM fans on the video card - HWiNFO64-1.dbg
the second is a successful launch. But the fan RPM is wrong. - HWiNFO64-2.dbg