It seems the screen stutters/jerks/not continous, instead you have nice waves for 1 second, them a little pause, them more nice waves, another stop, it feels like the thing is underpowered and from time to time the cpu just hangs doing something else, it is so annoying looking to the screen.
And the user interface, oh god
And those little add-on cards, there is 3 options, you can only have two of them at a time, and the sig-gen is really crap, basic wave-forms, if you want two outputs, then buy to add-ons, and can't use any other add-on, and almost 3K is a lot of money for such a basic product.
About the movie lenght, its perfect, just put it playing, reply to some other foruns, watch a bit, do something else, there is not that much content that you really need to see, just hear Dave complain about it