I have the exact problem with the exact same setup that you have and I am pretty sure my cart is original. I didn't take it apart but it has one chip that is black and another one that is normal, and if I understood the Arcade! website that's a pretty good indicator it's real. I don't know what causes those glitches, but you're not alone. And just like you, when I asked questions on this forum about it, I was scolded by a bunch of assholes about owning a rom. Isn't it funny how a forum that's supposed to PROMOTE the neo has so many members who exist soley to bitch about it, or some related issues like boots, roms, or NGF?