Situation update 3:

AMDMatt (AMD rep) has posted a new comment about the petition for this option in OCUK: ************************************************ I've posted this here before, but if anyone is experiencing clock fluctuation then you should be able to resolve the issue by using either Catalyst 15.7.1 WHQL or Catalyst 15.11.1 Beta as a temporary solution. ************************************************ https://forums.overclockers.co.uk/showpost.php?p=29233966&postcount=72 "Temporal solution" is the usual AMD "disable it" in this case use pre-Crimson drivers if new Crimson power saving saves too much...