I think the only major thing that would have changed is you went from fast to very fast greens.
This obviously affects you on putts, as the ball will be affected by break more. With a faster green the ball will actually be rolling slower because you hit it less to get it to go the same distance. If ball is moving slower than obviously the break will have more affect
This also could affect you on approaches depending on the spin of the clubs you are using, the trajectory of those clubs, the spin and distance of the ball you are using, etc Obliviously if the ball is coming in hot to an elevated green it will roll more now it is on a faster green, hence putting you further away and giving you less chance to 1 and 2 putt to make birdies and pars