I have Ai overclock tweaker set to "Auto"
Have you considered unmounting cooler, cleaning the cpu lid, re-apply a quality paste and re-install the cooler?
If temps are still sketchy, I'd try a more robust air cooler, or one of the many AIO liquid blocks out there! I'm running a Dark Rock Pro 3 on mine, and its been superb for almost 1.5 years now
I run 4.8 cpu, ram oc'ed to 3200 14-14-14-34, and slight gpu boost and dont get the temps your seeing.