LuaLaTeX is a lot slower than pdfLaTeX or XeLaTeX and default settings give different output than the other two, e.g., around line breaks at – or —. I only reco

LuaLaTeX is a lot slower than pdfLaTeX or XeLaTeX and default settings give different output than the other two, e.g., around line breaks at – or —. I only recommend it if you need it. Most people don't.