Plenty fast and not fast enough just don't do it then, huh? No, "performant" is one of those words which is usually chosen to flatter the speaker, not because

Plenty fast and not fast enough just don't do it then, huh? No, "performant" is one of those words which is usually chosen to flatter the speaker, not because it imparts some meaning which is so difficult to describe without it. When it comes to technical topics, amateurs write to impress. Professionals write for clarity.