I think this is an important piece to be cognitive of when doing slow motion swings (I like Tyler Ferrell's description as a Tai Chi swing, slow, intentional). Starting with slow but being able to dial up that gain in distinct steps to 20%, 40%, 60%+ etc starts to train those dynamics which you wouldn't get if you just did slow motion and full swing. Because at say 10%, you can't keep your wrists as loose as you might in the swing because the club might actually outrace your arms, but if you start dialing up at distinct intervals you can play around and start to feel the proper dynamics. Once you start feeling those dynamics, you can start to feel the different intentions that cause the desired (and undesired) patterns. I'm a huge fan of just going from delivery (p6ish) to lead leg parallel (just past impact, shaft parallel with lead leg) because it trains just how much "up" motion you need to prevent a rotation stall and get a proper release.