3840x2160@134Hz in "Detailed resolution" section of CRU

[YavorS]

My new monitor is Acer XV273K and my current video card is GTX 1080, connected by DisplayPort 1.4 cable. My goal with the CRU is to set default resolution in "Detailed resolution" section to the tested and working overclocked resolution of 3840x2160@134Hz (tested and set in Windows 10 by "Nvidia Control Panel" function: "Create costume resolution").

This are the working resolution settings that I want to set as default resolution in the "Detailed resolution" of CRU:

   

The problem is when I delete all the default settings from CRU "Detailed resolution", which are:

   

and try to add the exact setting from the "Nvidia Control Panel" function: "Create costume resolution" for the 3840x2160@134Hz resolution, CRU won’t let my (there is red text and the "OK" button is unavailable):

   

Apparently, there is something that I missing from the configuration, but I spend hours trying with no luck. So I decide to register in this forum and to ask. I suspect that the problem is somewhere in this settings, but they are beyond my understanding: