Hot take: Most people are over-tightening their pocket hole screws
I was helping a friend build a cabinet in his garage and watched him crank down every joint until the screw head was flush with the wood. That crushes the fibers and weakens the hold, something my mentor pointed out during my first year. How many turns past snug do you all aim for?
Sarah's comment about the quarter turn being perfect really hits home. I used to crank them down tight too, thinking it made things stronger. Then I watched a joint fail on a bookshelf I built, the wood just crushed under the screw head. Now I stop the second I feel real resistance, maybe a tiny bit more. The clamp does the holding, the screw just keeps it there.