Are you seeing vertical stripes on gradient colors after installing the May 2019 Update? It’s a problem with Windows 10, but you can get around this issue with these instructions.
According to a support page from a computer display manufacturer called Eizo and various user reports on Reddit (WinterBrave) (efreetcs), after installing the May 2019 Update, color tones don’t render correctly, causing a banding (vertical stripes) effect despite the graphics hardware or monitor you use.
It’s unclear the exact source of the problem, but it would appear that there is an issue with the Windows Calibration Loader that’s conflicting with the graphics driver making gradients not look smooth.
Via:: Windows Central