Is your PC capable of Hi-Def?

I have an odd question…

I have a Blu ray drive, and PowerDVD Ultra, 7600GT, 3.2Ghz P4, and Vista…

I just recently played “House Of Flying Daggers” and it rocked! Quality was superb and the sound was to die for… So I went out and bought “Casino Royale” and it looked like crap… it was studdering and hiccuping the whole way… I cehcked the drivers: they were OK… so I figured it must be the CPU, right?
CPU was hovering around 98%!

So then I wondered: why did “Daggers” look so good?.. played that one; CPU: 35-40% They are both 1080P running on the same system so why would one max the CPU and the other not even come close? were the disks coded differently?

Does anyone know why this happened because this one is blowing my mind!

I am responding to the comment by mike where he stated his PC specs and they were not powerful, yet he still managed to play the 1080p res. at no stuttering…could you please elaborate on what software U are using to playback the DVD’s and which decoders…very much appreciated if you do respond

Mitchell (I just go the XBOX 360 HD-DVD drive working on the computer !!!)