The demos of the actual game showcased improvements in recent builds and footages. The platinum demo wasn't even part of the actual game and was made separately. Something that you seem to ignore, still. The e3 demo showed no performance issues but merely a terrible player struggling to find out what the hell he is doing on stage. The stream on the vid linked on this thread isn't exactly a good one which made it look like the game wasn't performing perfectly.
Other streams show a perfectly smooth gameplay footage.
Nothing more unsightly than someone saying i didn't see something i saw with my own eyes.
All i hear are excuses. The game will come out soon and we will see who was right. People can spend their mony at their own risk, but i predict a disaster.
I really hope i'm wrong though. I don't want this series to end.
DId you even watch the video I linked? It looks like you didn't. It is significantly smoother than the one linked in the OP. The one in the OP had lag and was choppy while the one I linked was smooth all throughout.