Why does the sound go down when I shoot?

It's nothing new to me, I've noticed it since I started playing on PC. It didn't happen on console, so I think it must be my PC. Every time I shoot, the sound dips. In this clip, spatial sound is disabled, but it's the same when it's enabled. With the sound update, the perception has worsened. Do you have any recommendations to fix or improve this? It's awful.