Preloader first frame issue

I’m sure this has been asked and answered a million times, but I was having the bug where my preloader wouldn’t start until about 40% of my movie was loaded.

To fix it, I unchecked export in first frame on all clips that had it checked.

This fixed the problem, except I couldn’t attach movieclips that I had unchecked it on. To fix THAT, i made a scene in between my preloader and main scene and just dropped the clips in and had it play for one frame.

This seems very hacky, and I also don’t know how to fix it for sounds I want to attach without having them play in the hacky scene.

Is there a more elegant fix for this?