Audio Delay When Published But Not When Previewed

This happens intermittently in my projects and has for years. It seems like the default behavior is for a slide to start playing as soon as it downloads the base visuals on the slide, even if it isn't done downloading the audio or other heavy elements. For people with slow connections, this can result in the slide being mistimed (obviously, in the case of animations and such that are based on audio timing, or when there are different pieces of audio in sequence and they start overlapping each other because the first one is delayed).

It would be nice if there was a toggle to tell the presentations not to start playing a slide until all elements are downloaded. I'd rather the learner sees a loading bar moving between slides rather than it seeming to load quickly, but then having obvious timing issues.