Vimeo Stuttering on my Powerbook when viewing in HD ?

[twocik23]

I'm having some problems with viewing Vimeo in HD. When streaming, the clip stutters and then plays, then stutters again. I wait until the clip is finished and it still stutters, but only in HD.

I'm on third gen Powerbook - Safari 3.1.2 - ATI Radeon 9700 - 128mb Graphics card


Is it my graphics card or do I need some sort of plug in ?

 

[ryan brown]

Ram?

 

[twocik23]

2 gigs