Question Monitor stuck at 75hz

Jul 8, 2020
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My monitor is a pixio px275h. When i plug the hdmi cable it works just fine 1440p, 95hz. However, when i try to use it via displayport it just go up to 75hz, if i select 95hz it just go black. I tried different cables. I don't know what's going on. I want to use via displayport for the freesync, wich works fine at 75hz.
I have a gtx 1660 ti 6gb.
Help me please!!
 
No, I'm not talking about physical ports. Im talking about DP version.

In the OSD menu of my Samsung CHG70 I can select DP1.2, 1.4, and 1.4a. It was not set to the most recent version out of the box. I presume for compatibility reasons.
 
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