Problem with Optimization: Large Slideshow

Hello to all,

I am facing a problem the last days. I want to create a simple slideshow with jpeg images for display at high resolution (3200x1200). I have tried to optimize the jit.qt.movie objects by using a unique1 argument - update only when a frame has changed from the previous. This option gives me great results, but I cant fade in and out from the jpegs. I have also tried do this with shaders but I get the same results. I cant make the jpegs to update during the transition. How can I do that? What are my alternatives here?

Thanks

Stav

p.s. using unique 0 gives me terrible results (8-9 fps), and I have also tried the speedlim object.