I’ve noticed some powders suck up moisture way quicker than others, especially the really fine ones. Some come soft and fluffy, then turn into a solid chunk after a few days if you don’t store them right.
I started paying more attention to the stretched position and found it changed how I approached exercise selection
I would rather build my program around full reps and use partials as an additional technique when appropriate
The resistance profile of an exercise probably matters more than simply deciding whether partials or full reps are better