UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.110 Safari/537.36

Example URL:
http://www.rodzicpoludzku.pl/images/rzecznictwo/RAPORT_Medykalizacja_porodu_w_Polsce_2017.pdf

Steps to reproduce the problem:
1. Open http://www.rodzicpoludzku.pl/images/rzecznictwo/RAPORT_Medykalizacja_porodu_w_Polsce_2017.pdf
2. Scroll a little
3. 

What is the expected behavior?

What went wrong?
Scrolling has very noticeable lag. It's way faster in Safari 10.1 and Firefox 52.0.2 (which uses PDF.js).

Does it occur on multiple sites: N/A

Is it a problem with a plugin? Yes Chrome PDF Viewer

Did this work before? N/A 

Does this work in other browsers? Yes

Chrome version: 59.0.3054.0  Channel: canary
OS Version: OS X 10.12.4
Flash Version: 

The problem exists both in stable Chrome & in Canary.