I think of pacing as making sure that important events happen frequently enough that the reader doesn’t get a chance to quit reading. That doesn’t mean every scene has a turning point, but every scene has to have some event that affects the overall plot, or that scene is basically “skippable”. And every scene can help set up for a later turning point.
Problem #10: Backstory Blunders
The past is prologue, for sure, but you can tell too much too soon dragging your plot down, if everything about the characters’ past is explained right upfront in Chapter One.