1174492 - Scrolling on Android stutters badly compared to Chrome

Status: RESOLVED FIXED

(Firefox for Android Graveyard :: Toolbar, defect)

Description

[sand_bit]

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0
Build ID: 20150525141253

Steps to reproduce:

A few websites for testing:

news.google.com (Text is blurry if scrolling is too fast on firefox, but always clear on chrome. Bottom editor's pick portion has broken for firefox, functional for Chrome. Also noticeable stutter on firefox.)

m.slashdot.org (Scrolling on firefox is noticeably stuttering)

theverge.com (horizontal scrolling bar with images on the 4th row, scrolling works on Chrome, barely works on firefox, feels like sub 5 fps)

amd.com (Scrolling on Chrome is smooth, however page is not fully rendered until scrolling is finished, on firefox content is fully loaded, but scrolling is basically unusable)


Actual results:

Stutters compared to the results that Chrome produces. Reproducible on FF 39 beta, and FF 38.0.1, did not test other versions. 


Expected results:

Fully fluid, stutter free scrolling

Comment 1

[u549602]

Following the reproduction steps stated in the bug description, the issues could be reproduced when using the latest Nightly(44.0a1), Aurora (43.0a2)and Beta(42.0b1)builds on the following devices: Alcatel One Touch(Android 4.1.2), Xiaomi MI i4 (Android 5.0.2), Samsung Galaxi S5 (Android 4.4.2)
Please note that the same pages were loaded on chrome on the same devices and the page scrolling worked fine.

Comment 2

[Kartikaya Gupta (email:[e-mail])]

These are all pretty much fixed on nightly with the C++ APZ code. Changing dependencies so we can close this out once APZ is riding the trains.

Comment 3

[Kartikaya Gupta (email:[e-mail])]

APZ has shipped in firefox 48.