Low sound, I tought it's a glitch?

Yep, the volume is low, I can hear something like 2% of it, even the horn's volume is low, I've been having this problem since the 0.74 patch, I mean I can hear something but most of the times I can't because the volume is like it's been reduced from 100% to 3-5%, just an example.

Sorry, I didn't know about that topic, thanks for linking me it :)