Can't get my CG437k P monitor to get over 59hz at 4k

SultanofFunk

The monitor says it support 4k 3840x2160 @120hz but won't give me the option. 
Before you think you have a easy solution, here is more info on my issue. 

Titan x Pascal with the newest driver that says it supports this monitor at 120hz. 
I have called nvidia to see if they had a solution. I even tried rolling back their driver. It isn't an issue on their end. 
I am not using an HDMI, I am using displayport 1.4.
I have tried different cables and every combination of monitor display port to graphics card displayport. 
I downloaded the specific monitor driver to replace the generic pnp play driver.
I have tried loading it at 120 hz in a custom resolution, no dice. 

My only thought process is that there is a fireware issue not allowing it or windows 10 is being windows 10 and not allowing it for some stupid reason.

Very frustrating when a monitor at this price point fails to operate accordingly.  

Frakatchoo

Hello !

I had a similar problem. To solve it, you must deactivate AdaptiveSync in the screen menu, then you can select the frequency at 120hz. You can reactivate AdaptiveSync after that.

I hope it will help you.