For some odd reason my different decks have different "desires" and I try to "listen". My Archeon deck for example, after I do the usual mix and a hand plop shuffle of 7 times...(did we read that in an early learning experience?) the cards seem to want to get formed in a goofy house position of two stacks parallel and then to stacks roofing each of the two in the middle, then they want to "cook" (like a kiln?) for a minute. Experience has taught me not to touch them until...then there will come somebody at the door, or something weird. The reason I try to be sensitive to the kinetic wants of the cards is that I note of they are tight and reluctant to shuffle (just as on a damp day) or crazy flying-fast. If find the entire tarot process a give and take experience and it begins even with the decision and calm required to even do a reading, so it includes the shuffling.
Also, I find that the Magician [1] is often responsible for odd requests of the cards (weirder than the stacking above) and if the cards "want" to be counter-intuitively horizontal or sideways in the shuffling stage, that presence is literally pushing the sitter around.