iPad Pro 10.5 Pencil: jagged strokes, HW or SW issue?

Hi,

I have recently purchased the new 10.5 inch iPad Pro while also owning the 9.7 inch model.

I am an avid user of the pencil, which I use daily for note taking.

Upon switching to the new device, I noticed odd behaviour of the pencil. For example, upon first installation, the Nebo app will ask you to scribble some text using your pencil. Anything I write there looks extremely jittery (although the latency is low, the lines are very jagged):

The exact same thing happens in Microsoft OneNote:

On the old iPad, same pencil, same note, same everything it looks better:

There are two options:

1. The new HW, with the newer screen polls the pencil more frequently and apps are not fully optimised for that somehow.
2. My hardware is faulty

In the Apple Store, display units also run OneNote but this is an older build (15.27 - 160930) vs the most recent App Store build (16.2.1 - 170616).

At least on those units, I do not see the effect.

It would be nice if the community, specifically 10.5 owners with OneNote (fully up-to-date) could try this out in the apps mentioned.

If my HW is faulty I would like to know sooner rather than later so I can return it.

I have tried all the usual options like device resets, changing pencil and even changing pencil nibs... It is likely not that.