Steps to reproduce
Open a large document (~200 items) on Android in either the native app or in the web browser. Scroll down the list.
Smooth scrolling, like you normally see on a shorter list (~30 items).
Very laggy/jittery scrolling. Note that for the same list it scrolls smoothly on web. In order for it to go away I have to zoom in on a sub-item to shorten the current view to something it can handle better.
Here’s a video showing what it looks like: https://streamable.com/qhp1j
The first part of the video shows the lag on the large list, and then second part shows the smooth scrolling when zoomed into a sub-item with less rendered content. The difference between the jittery scrolling and smooth scrolling is much more pronounced than what is captured in the video.
OnePlus 5T running Android 9.0.