I completely agree, and on top of it my Note 2 slowed down a lot, under any usage scenario.
It's ridiculous, some applications now take even 2 seconds before opening after tapping on them.
I'm going to downgrade mine as well.
Same thing for me on my Note 2. As usual with Samsung's updates, one step forward and three steps backward.
On top of it my phone has consistently slowed down. I'm thinking of rooting it and install back the previous ROM.