Alright, can you guys simply re-download it and tell me if it's faster now? I turned off the motion blur, turned on the 'Run without PS' option and fixed that freaking scrolling bug in the second layout (the player model was set to the background layer and not to the base layer).
I don't have an older machine at hand right now, would be interesting to know if it's just the motion blur that kills the performance or if there's something else at work. I also capped the res at 720p now.
Edit: Oops, I'm totally hi-jacking this thread. I should probably open up my own, so we don't fill up this one