Pixelated gif when used with QMovie

[Boney]

I'm trying to show a gif file in QT app, using the approach provided in the link: https://code.qt.io/cgit/qt/qtbase.git/tree/examples/widgets/widgets/movie?h=5.15

Approach makes use of QMovie object set in a QLabel.

The example works well and fine.

But if I enable High DPI scaling for the app, the gif becomes all pixelated. Please see the screenshots below.

This is the line that I add to enable High DPI scaling.

QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

Any ideas to get this fixed ?

I have tried the following fixes already:

setScaledSize for the QMovie object
setScaledContents(true) for the QLabel
QT version I'm using is 5.15.2 and platform is Windows.