I suggest changing the default resample-method to speex-float-10, instead of speex-float-1, which is the current default now, in /etc/pulse/daemon.conf.
In my day-to-day usage, it gives better sound quality without sacrificing CPU power.
I have always done that since at least 2012. I was not satisfied with the sound quality in Ubuntu compared to Windows, so I changed the resample-method.
It would look like this in daemon.conf:
resample-method = speex-float-10
I have not tried other resample methods. Maybe there are better options I don't know about.
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