Since Patch 4.3 Skill sounds are async / dont line up with the animation

Date & Time: always
World name: Shiva
Character name: Nele Mildth
Party or solo: Party

since patch 4.3 something is bugged/wrong with skill sounds
all of my Skills are out of sync if i enter 4, 8 or 24 Man Content, looks like this happens only if there are to many Skill sounds that the game gets Poblems with it.

dummy = all is fine
4man Content = out of sync
8man Content = out of sync
24man Content = out of sync

some other players reported to me the same issue, so its not on my side and on a dummy its fine too.
this bug drives me crazy