I never noticed anything like that.. works pretty good for me. How many view do you have? Cause (as far as I know) there should be only one with flag AUDIBLE set on. Maybe there is a view, which doesn't move with the entity?
Greets!
I'm using only the default camera view, so that shouldn't be a problem. Maybe Shade-c EVO or PhysX causes it? I think I used ent_playsound in the past and didn't have those issues