Yeah that seems to be it. It works properly when either running only HWiNFO64 (for 3 hours now) or when running HWiNFO64 + GPU Tweak III but with the Nuvoton sensor disabled (1 hour). Never occurred to me that there might be a conflict there since they both ran fine together on my old...
Board: Asrock B550 Steel Legend
Sensor: Nuvoton NCT6796D
HWinFO version: 7.15-4620
After a seemingly arbitrary amount (I've seen 10 minutes, I've seen 30) of time running HWiNFO64, the motherboard sensor will stop reporting CPU temp and will instead just freeze at one value. The CPU itself...