Sound output managed by PulseAudio becomes fuzzy after playing audio in Firefox

Hi,
I find pulse audio delivers fuzzy audio after visiting some websites, in firefox, there is a complicated fix somewhere , however I wondered is it possible just to try to give it a slightly higher priority on startup just to see if that's a quick fix? This problem didn't seem to exist a year ago and now it happens regularly. Thanks in advance.

I had issues with an ARM based Raspberry Pi 4 and there were some online instructions available that fixed it. But I’ve never had any problems with a new PC or laptop. What kind of device are you using?

lshw
WARNING: you should run this program as super-user.
home
description: Computer
width: 64 bits
capabilities: smp vsyscall32
*-core
description: Motherboard
physical id: 0
*-memory
description: System memory
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size: 10GiB
*-cpu
product: AMD FX(tm)-8350 Eight-Core Processor
vendor: Advanced Micro Devices [AMD]
physical id: 1
bus info: [email protected]
size: 1404MHz
capacity: 4GHz
width: 64 bits

       *-multimedia
            description: Audio device
            product: Oland/Hainan/Cape Verde/Pitcairn HDMI Audio [Radeon HD 7000 Series]
            vendor: Advanced Micro Devices, Inc. [AMD/ATI]
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    *-multimedia
         description: Audio device
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         vendor: Advanced Micro Devices, Inc. [AMD/ATI]
         physical id: 14.2
         bus info: [email protected]:00:14.2
         version: 00
         width: 64 bits
         clock: 33MHz
         capabilities: bus_master cap_list
         configuration: driver=snd_hda_intel latency=64
         resources: irq:16 memory:fe9f4000-fe9f7fff

To described it better, the fuzziness is like some kind of echo, its where you can here someone say something on a video playing and then you hear it about a half a second later, so its like you hear a mix of two timelines of it and its not clear, its fuzzy. Bit like static.

Today it happened just upon opening sky news whilst playing an mp3 in VLC.

If nobody knows an answer to this , that's fine, however if you know if its possible to start the pulse audio service with high than usual privileges just to see if it helps, can you please advise so? Thanks in advance.

Pulse already runs default with a much higher priority than everything else.
The echo that you hear is possibly firefox corrupting the soundbuffer.

Try another browser , brave-browser for instance, and see if it also corrupts the sound.
If it doesn't it would be a great idea to report a bug at mozilla.

b.t.w., I never encountered this problem. Not on my machines nor anyone else's
so I'm afraid I'm out of ideas on this one at the moment.