Open Bug 1427177 Opened 8 years ago Updated 3 years ago

Firefox Quantum Desktop CSS transform rendering performance issues

Categories

(Core :: Layout, defect, P3)

Product:
Core
Component:
Layout
Version:
57 Branch
Type:
defect

Tracking

()

Status:
UNCONFIRMED

People

(Reporter: rok.pensek, Unassigned)

Details

(Keywords: perf)

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.108 Safari/537.36 Steps to reproduce: Just run the following Codepen on latest Firefox desktop version: - https://codepen.io/rokiii/pen/OzWddJ Actual results: Slow rendering performance. While testing out performance benchmark in Firefox dev tools it will falsely state that it runs at 60FPS with drops to 45-49FPS, when it clearly renders below 5 FPS. Expected results: The animation should be smooth (~60fps) like in older versions of Firefox (tested out v52 but should be good with anything below Quantum update) and other browsers like Safari, Chrome which are on latest stable versions.
Component: Untriaged → Layout
Keywords: perf
Product: Firefox → Core
[ Triage 2017/02/20: P3 ]
Priority: -- → P3
Severity: normal → S3
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