1459535 - Performance is incredibly degraded when idle on Foreignpolicy.com

Status: NEW

(Core :: Audio/Video: Playback, defect, P3)

Description

[Karl Dubost💡 :karlcow]

This is a spin-off of https://webcompat.com/issues/16598


===== As reported by the user =====
I've noticed Firefox Nightly having a huge "Energy impact" in mac OS's Activity Monitor, and it indeed have a great impact on the general performance of my laptop.

I've noticed this usually happens if I am on ForeignPolicy.com, I've tried to let it idle on other websites to see if this would happen again.
https://webcompat.com/uploads/2018/4/aea6cf66-f574-4ff1-842a-3cd154b63277.jpg

<details>
<summary>Browser Configuration</summary>
<ul>
  <li>buildID: 20180424013604</li><li>gfx.webrender.blob-images: true</li><li>gfx.webrender.all: false</li><li>gfx.webrender.enabled: false</li><li>image.mem.shared: true</li><li>channel: nightly</li>
</ul>
</details>

==================================


Check https://webcompat.com/issues/16598
 for additional details

Comment 1

[Firefox Bug Husbandry Bot]

Migrating Webcompat whiteboard priorities to project flags. See bug 1547409.

Comment 2

[Firefox Bug Husbandry Bot]

See bug 1547409. Migrating whiteboard priority tags to program flags.