Update
1. Set initial value of property "Audio effect" to "No".
2. Remove audio effect when play sound
Rable
It might have 3 possible solutions.
1. set property "Audio effect" to "No" to fade out sound by setting volume every tick without using audio effect.
or 2. add action: remove all audio effect (official audio object) before playing audio by official audio object if "Audio effect" is set to "Yes".
or 3. uses action play of audio helper object to play sound, it will remove audio effect in that action, in the latest version.