Have you checked whether on your TV if the HDMI inputs are set to receive the 4K HDR signal? For example on Sony TVs you need to set the HDMI inputs to "Advanced"
I can also change the resolution, but the problem is that with different games the graphics quality even 4K is really low, there are many graphic defects especially in the dark areas of the screen. ...
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I can also change the resolution, but the problem is that with different games the graphics quality even 4K is really low, there are many graphic defects especially in the dark areas of the screen. You absolutely have to increase the quality of the games otherwise your service makes no sense.