I use Vrcfury because its more user friendly editing a toggle component to a certain level of blendshape in an empty should be easier than understanding keyframes , I also understand everyone has different ways of doing things.
I do know that if you have everything playing at once on this dick you can run into VRC culling / stopping sounds from playing but that usually wouldnt be the case unless you had throbbing on top of sloshing on top of both particle effects running usually, also certain worlds can kill sounds too like IDLE cube and Popcorn palace.
This is in the unity editor and also in worlds like Sovren's. I see in the play menu the throbbing doesn't even emit an audio emitter icon unlike the other effects. I'm curious as to why, maybe the aforementioned culling. But if everything's turned off, and it's in the editor. It shouldn't be doing that.
Well for throbbing to emit sound there are conditions one of which is you need to be >60% aroused , so make sure you have arousal Framework installed and then try ^>^ if you still have problems I'll hand you my discord and we can sit down and figure things out! I know the new SDK has been giving folks issues.