[QUOTE=samsc]and what image size are your movies?
And what codec?

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no i dont think its bad.

there were no changes that would affect performance...

Quote Originally Posted by samsc
you are doing more than your macbook can handle.
it doesnt have great graphics performance.
I know , but I'm using really little movies not the 4800 one

Quote Originally Posted by samsc
catalyst is designed to work on desktop machines with powerful graphics cards.
sure !

Quote Originally Posted by samsc
if running on powerbooks/macbooks/mac mini- you have to work within the limits of those machines.
What I say it's that if I running 3 movies ( little one ) they do very well . If I use sync there is a bug that woun't re-sync after the loop it's finished , that's ( I think ) it's not about macmini or macbook . Pls check your self .

Quote Originally Posted by samsc
i think you are just completely overloading your macbook.....
syncing 3 movies on your macbook just is not going to work.
the less powerful your machine - the more conservatively you have to use it.
There is no magic.
Sure I know there is no MAGIC ! i trust that ! but the bug it's about re-sync after loop it's finished . Can you pls try it your self ?

Thanks