My small TTRPG group has now started playing Pathfinder 1e, and one of the players is now DMing this new effort! We had our first session last night where we spent a lot of the time learning some of the game mechanics that are different than our previous sessions with D&D5e. Pathfinder is a lot more detailed (crunchier?) for stats and has more math in it. We're meeting again this Thursday to play more Pathfinder, so we'll see how that goes.