crackling sound on HDMI

Hello, I am experiencing crackling sound in some applications like Firefox if I use HDMI.
It’s not present if I play Steam games.
It’s normally not present if I use headphones, but under vcvrack 2.0 can sometimes give “crackling” sound.

OS: Latest Ubuntu budgie.
AMD Ryzen 7 2700.
SAPPHIRE Pulse Radeon RX 5500
Corsair Vengeance LPX 32GB 3200MHz RAM
2X Samsung 970 EVO Plus 500GB

Has anyone else experienced the same?
How do I solve this issue?

This is a generic issue that all ubuntu based systems will be affected by i.e. not budgie specific.

Thus, I recommend you ask this on and where the much wider ubuntu community can help.

See if it’s related to « speech-dispatcher » process that may be unexpectedly triggered by Firefox ?