Can't record audio workloads for a long time

I'm using Firefox 99.0.1 .

Right now I have the problem that I can’t record profiles for a long time in Firefox (< 10s) anymore, when recording audio workload. It used to work better in the past (I think).

When I try, I get the following error when the FF Profiler opens:

> Error: DataCloneError: JSWindowActorParent.sendAsyncMessage: JSWindowActorParent serialization error: data too large, in actor 'WebChannel'

In his blog post [Profiling real-time audio workloads in Firefox](https://blog.paul.cx/post/profiling-firefox-real-time-media-workloads/) padenot mentioned that his configuration of the FF Profiler allows to record for a very long time. I also tested with karplus-stress-tester (https://jackschaedler.github.io/karplus-stress-tester/) like he did, but it doesn't work for me anymore.

Repro:
Open karplus-stress-teste
Select a high number of strings like 600
Click start audio
Click strum all
Start recording in Performance tab
Wait about 15 seconds
Capture recording

-> FF Profiler opens and shows the error message.

I configured the Profiler like it is described in the last video of the blog post. The options that are new since then I tried enabled and disabled, but it didn't show an effect for me.

It would be interesting if anyone else runs into this problem.

┆Issue is synchronized with this [Jira Task](https://mozilla-hub.atlassian.net/browse/FP-544)

Reproduce the failure in Firefox 99.0.1 using karplus-stress-tester with about 600 strings, then start recording from the Performance tab and capture after 15 seconds. Begin at the FF Profiler capture flow and the WebChannel DataCloneError; done means the recording opens in the profiler without the data-too-large error.

Written by the indexing model from the issue text.