1660640 - Judder while doing touchpad scroll on CNN Politics article

Status: RESOLVED DUPLICATE of bug 1657183

(Core :: Graphics, defect)

Description

[Asif Youssuff]

Basic information

Steps to Reproduce:

1. Visit https://www.cnn.com/2020/08/22/politics/jo-rae-perkins-qanon-oregon-senate-race/index.html
2. Scroll up and down page using touchpad

Expected Results:

Smooth scrolling.

Actual Results:

Lots of judder.

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More information

Profile URL: https://share.firefox.dev/2FRU5vL

Basic systems configuration:

OS version: Windows 10

GPU model: Intel HD 600

Number of cores: 2

Amount of memory (RAM): 8GB

Thanks so much for your help.

Comment 1

[Bas Schouten (:bas.schouten)]

It looks like there's only 2 cores here and the pageload is drowning out the compositor and the renderer thread (It's certainly drowning out the profiler), potentially those may have to run at a higher priority to address this, or possibly WR should be faster.

Comment 3

[Jeff Muizelaar [:jrmuizel]]

Is this better if you disable WebRender?

Comment 4

[Asif Youssuff]

Jeff, perhaps a little better without WebRender. Initially, there is less judder but more whiting out/checkerboarding (?). After the page has settled, judder seems minimal, though by no means "smooth".

I also upgraded to the latest drivers (got an alert from the Intel tray app) so that may have made a slight difference as well.

Hope that helps!