Ability sound effect very low in dungeon/raids

This happens to more than one class so i don’t think its call-related.

The sound effect of my abilities are much lower when i am in a dungeon/raid compared to when i am on the target dummies.

Anyone else notice the same thing or am i crazy?

It might be because there are many people doing their own class sounds so if the volume was the same, it could get too loud?