1080p videos sluggish on Macbook Pro

Hi,
If I run a slideshow in iPhoto 9 containing an 1080p MP4 video it is all sluggish and running at very low framerate consuming all CPU power. Running the same video using a double click (will open Quicktime) makes it run absolutely smooth.
Is there a fix for this? Is iPhoto 11 doing any better?
My machine is a 2.26GHz Core 2 Duo with 4 GB of RAM.

Welcome to the Apple Discussions.
If I run a slideshow in iPhoto 9 containing an 1080p MP4 video
Are you referring to having this MP4 file in an iPhoto slideshow and running from within iPhoto? If so what theme are you using? How much free space do you have on your boot drive?

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