1842135 - MartyPC Player slower in Firefox

Status: UNCONFIRMED

(Core :: JavaScript: WebAssembly, defect, P2)

Description

[campbell_kerr]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/114.0

Steps to reproduce:

Run the PC emulator demo below.

https://dbalsom.github.io/martypc/web/player.html?title=area5150

Actual results:

Demo runs, but is sluggish. It's most obvious with the audio. The demo runs smoothly in Edge.

Expected results:

Demo should run at normal speed.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Mayank Bansal]

Profile1 on Win11x64 : https://share.firefox.dev/3ptPg2U
Profile2 on Win11x64: https://share.firefox.dev/3rm2cYS

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:rhunt, could you have a look please?

For more information, please visit BugBot documentation.

Comment 4

[Ryan Hunt [:rhunt]]

Hmm. Testing on my M1 MacBook, I see about the same performance in Firefox as in Chrome (assuming the same web engine as Edge). Console reports 60 FPS in both. I'll need to dig out a windows machine to test there.