I was a little concerned with the new 3D effect, but it's perfectly stable in normal playing conditions. It jumps around a little more easily than I would like, but when I take my glasses off there's pretty much no amount of movement I can do to make it lose my face.
Maybe the universe is telling me to get new contact lenses.
I'm not very impressed with the super stable 3D. yeah it jumps around for me too. maybe cause of my glasses, I don't know.
But isn't that incredibly strange... let's be honest here, a lot of asians wear glasses. A LOT. so you'd think nintendo would make sure that glasses aren't going to interfere much with it. so i'm not convinced it's a glasses thing.
I play with 3d off most of the time anyway. but still!!