QtPdf QML component poor document rendering resolution

When using PdfMultiPageView QML component and calling scaleToPage(width, height) method the resulting rendering quality is poor because the image has been rendered at low resolution and then scaled up instead of re-rendering at the new scale. This makes the document almost unreadable.

Also adjusting the zoom through pinch zooming doesn't re-render the page, instead it just performs regular picture scaling. Meaning that zooming in even a little makes the PDF display quality poor.

Example images of the scaleToPage() results attached.