Good morning,
I don't like necro'ing old posts, but was there ever a resolution to this? I am having an identical issue.
My "Fan2" on ATI PM2 is instantly jumping from 681,600 RPM back to 1408 RPM.
System:
ASUS M5A97 LE R2.0
AMD FX-8320
EVGA GTX 1070 SC Black Edition Gaming (08G-P4-5173)
2x...