Samsung LU28R550UQPXEN Problem.

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7 Oct 2023
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1
Location
spain
Hi;
New here. Apologies for my English. Please if anyone could help me with this.
I bought two of this monitors. I know there are not the best etc. But they were cheap. I could get the two for 360 euros. They are 4k displays at 60Hz. 1 DisplayPort 1.2 and 2 HDMI each monitor.
I connected them to my pc and I'm having two problems... the FIRST one is that if I use DisplayPort cable to connect only one of them to the pc (I have 2.1 version cable, i know the monitor is just 1.2) the image start flickering, colors start popping, etc.. like a bad effect in a movie when the monitor is about to fail. I can't connect them via DisplayPort, don't know why. I think it's my old NVIDIA 1060 3gb. (An AMD rx7800XT is coming next week)

The second problem comes when i connect both of them to the Pc via HDMI. I can connect them without problem, they show the images BUT they show different tonalities. I will attach for images. Two from the calibration report the monitor shows me and two of the "Format color".
As you can see there are two spaces or formats... One RGB and the other one is YCBCR420?¿?¿?
I don't know if that is that is the cause of seeing two different tonalities in my monitors. They were bought from the same company, exact same model, etc etc...
Can anyone have any idea what's happening?

Images:

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