Sound beep with buttons

Hello.

Prob 1: I’ve associated a beep with my buttons by adding a sound on the down frame of the button. However, when I start clicking my buttons this beep sound on some clicks is extremely distorted.

Prob 2: If I keep clicking the beep sound associated with my buttons on certain occasions the beep sounds louder. I don’t know why (I do have a background loop playing, could it be the cause?).

Thank you for the time.