Super Mario Galaxy Cutscenes Choppy/Stuttering

[Nyaako]

Not sure if this is related to the whole shader cache thing, but when I tried starting up Super Mario Galaxy, the first cutscene (where Bowser appears before kidnapping Peach), it was stuttering a hell lot. And then, after the cutscene I restarted the game and saw that the cutscene was now smooth with no stutter. Well, until the next cutscene which was Bowser summoning that UFO to pick up Peach's Castle and in that cutscene it stuttered the same exact way unless I finish watching the whole cutscene and restart the game again.

Any ideas?

Using Dolphin Nightly Build 5.0-600