Sound plays from multiple speakers with slight delay

[HarHarLinks]

Steps to reproduce

I have 2 speakers, the builtin laptop speaker and the speaker built into my monitor.

1. Laptop speaker is default speaker
2. use pavucontrol to set the element call tab to use the monitor speaker
3. go to element settings, set the speaker to the laptop speaker. this spawns a new playback instance in pavucontrol
4. use pavucontrol again to set the tab to use the monitor speaker

Outcome

What did you expect?

pavucontrol and element call stay in sync about what speaker they use

What happened instead?

Sound plays from both speakers with slight delay, sounding very 80s.

Operating system

I use Arch BTW

Browser information

Firefox 152.0.5

URL for webapp

call.element.io

Will you send logs?

Yes