AMD Tech Support may be able to help you. They've helped me.

Are you running the latest driver? Maybe uninstalling the current one,
rebooting, and putting in the newest might help. It could be a thing
that was fixed.

Also, maybe be sure you've installed the driver from the monitor
company, and reinstall it each time after changing video drivers.

Also, maybe in the control center under My VGA Displays (or Panels),
Properties, Monitor Attributes, try toggling the Use EDID and see what's
available each way.

--
Ed Light

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