The company where I work, works with focused games for hearing care down so it's lot of audios in the project.
Not to weigh the connection, the manual preload would be ideal. So I can perform the download by level. I make the choice of audios by XML.
But the "on preload complete", is triggered so start EventSheet,. And as the C2, already has by default load demand, the first time that the audio plays, gets the delay, but not the second. This I infer that it is not to have downloaded the audio.