Cant adjust vcore on asus z170 pro gaming

[Gazi]

When i try to change vcore above 1.25 there is no change untill i set like 1.275, then it shows 1.264. When i set 1.25 or 1.26 it stays at 1.248 like on 1.25.

Whats going on?

 

[weberdarren97]

http://www.tomshardware.com/answers/id-3146077/cpu-vcore-correct.html