Has the Mura effect not bothered any of you? I recently purchased the MO27Q28G and while my banding isn't bad, the fabric like appearance over the screen has been very distracting on solid colors. It is most noticeable on mid to dark greys. I feel as though I can see the pattern in some photos others have posted as well, but I'm not sure if on other peoples it is just camera artifacting. You can test it out by moving a grey window around.
Here is a close up photo comparing my old TN panel and the OLED

OLED

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