Subtle black horizontal lines on my screen

[Windows 11]

I’ve noticed those subtle black horizontal lines going across my screen, one starts darker from the left and as it goes to the other side of my screen it fades. It’s the same with the other lines but the opposite way. The weird thing is when i change the refresh rate from 144Hz to lets say 60Hz the position of the lines change. I tried a couple of things to fix it like changing cable and restarting my settings on the monitor but nothing seemed to work. Is there something i could do to try and fix it?As seen on the picture there is a line in the middle and very close to the top of the monitor.T

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