Crazy bug that was driving me nuts:
I had a placeholder (hidden) iframe for a YouTube video with
"#" was causing my layout to re-render within the iframe even though it was hidden and not displayed. This resulted in all of my assets getting loaded twice!
To fix this, all I needed to do was use
src="" as the placeholder instead. I am not sure why this happens yet, but I will update this post once/if I find out.