Voice sounds interrupting each other

Hello !

I'm noticing that while a character is speaking during a combat (e.g. casting a spell, screaming, etc), it tends to interrupt other characters sound. For instance, if a spellcaster start to cast a spell and then someone speaks, the spellcasting sound is interrupted and we just hear the phrase (and a clipping sound).

It can be quite experience-breaking.

I'm having this issue through my USB headset and my speakers connected via my Realtek codecs. I'm under Windows 10 (see dxdiag file)

Any ideas or solutions ?

Thanks

DxDiag.txt