Pdf Embed API Icons blurry (low resolution)

Hi,

I am experimenting with the PDF Embed API and everything is working fine. However, after embedding, I noticed that everything is blurry (low resolution). Like it is rendered and then zoomed (scaled) - including the PDF itself.

If I go to the Adobe Demo, the resolution is perfect:

Why is this? Is there some setting that solves this?

We just used/copied all of the default code.

Thanks
Milos