Open Bug 1422835 Opened 8 years ago Updated 3 years ago

CSS animations are sluggish on a sample page.

Categories

(Core :: CSS Parsing and Computation, defect, P3)

Product:
Core
Component:
CSS Parsing and Computation
Platform:
All
Windows
Type:
defect

Tracking

()

People

(Reporter: rockridge07, Unassigned)

References

(
URL
)

Details

(Keywords: perf, testcase)

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:59.0) Gecko/20100101 Firefox/59.0 Build ID: 20171204100103 Steps to reproduce: 1. Open the following URL. https://codepen.io/YusukeNakaya/pen/ZXmJjj 2. Move your mouse cursor on the lower half of the page. Actual results: It's consuming CPU/GPU resources so high. CSS animations on the page are sluggish. Expected results: CSS animations on the page are smooth. When you test it with Chrome, you will see even though it's consuming CPU/GPU resources high, which is less than Firefox, CSS animations on the page work smoothly.
URL: https://codepen.io/YusukeNakaya/pen/Z...
Has STR: --- → yes
Component: Untriaged → CSS Parsing and Computation
OS: Unspecified → Windows 10
Product: Firefox → Core
Hardware: Unspecified → x86
This doesn't render correctly with Webrender, but it does seem to be faster...
See Also: → 1423090
Keywords: perf, testcase
Priority: -- → P1
Priority: P1 → P3
Status: UNCONFIRMED → NEW
Ever confirmed: true
OS: Windows 10 → Windows
Hardware: x86 → All
Severity: normal → S3
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