I have this issue with Corsair Virtuoso. Both wireless,usb and 3.5mm.
Even tested with connecting the 3.5mm through ST100.
Seems to only happen with custom EQ when im using a high bass setting and also with bass boost eq preset.
The sound will go suddenly loud for a short time and then normal and then loud again.
Its not an extreme loudness but it is annoying.
Also does not happen if i terminate icue. But then nothing else works properly either with my rgb or fan settings.
Its not a constant problem some days it works just fine.
I also tried installing icue 4 but no difference.
Dont know if its icue or the headset itself that is causing the issue anyone have an idea of what more i can try?