I have the Dell UP3017Q OLED monitor.
I've noticed that there are a handful of areas on the screen, primarily in a somewhat vertical line along the center of the screen, but in somewhat concentrated and clustered areas, where pixels/subpixels seem to rapidly turn on and off.
I at first thought this was an artifact of a faulty cable or perhaps PC, but I have tried three PCs using both the HDMI and USB-C cables, and the monitor still exhibits the same behavior. I've tried adjusting settings and performing a factory reset, but nothing seems to help. Changing some settings like Color Space or Brightness can slightly alter where some of the areas are or the color of the flashing pixels, but the problem still remains.
I am attaching a YouTube link to a video of the problem. You'll want to watch fullscreen at the 1080p or 4K quality, as the compression of the lower settings obscures the problem. The blinking white pixels near the center of the video (above the white line) are the problem I am referring to.
This does not seem like normal behavior. Any assistance would be appreciated.
(Please visit the site to view this video)