[Gameplay] Dr Mundo Ult SFX is way too quiet

I just recently got back into LOL after a long break, and I noticed that Dr Mundo's ultimate sound effect (specifically the whoosh whoosh breathy sound that plays for the duration) sounds far quieter than it was before. Previously, it was really in the "foreground", the sort of thing you can't miss or ignore, and really helped me to keep track of how long it was active for, and how much was left. But now it's so soft it gets covered up by basically every other sound effect in a fight. I looked for any patches that might have changed it, but I only saw this one: https://youtu.be/0KRoF1Z_tYM?t=28 In this video, Mundo's ult is still quite loud. Far louder than in my games, anyway. So either there was a change between then and now, and nobody really documented it or discussed it, or it's a bug.

If I had to guess, I'd guess that now both Mundo and everyone else are hearing the same thing at the same volume, where previously Mundo was hearing a louder version of his own ult sound effect.