Thanks for your posts…
OK, Here are some rendertimes:
a) Two 30 second DV Clips with a 30 second cross dissolve between them: Rendering-time: 13 seconds whether checked GPU accellerated rendering or not.
b) a one minute DV clip with the quick color corrector needs 33 seconds to render whether activated GPU rendering or not
In both cases, rendering times are exactly the same, and – what i wonder about – in both cases rendering time is less than the original clip-lenght. So my machine is rendering “faster than realtime”, but playing back directly from the timeline the preview quality is reduced (if set to auto), or the playback is stuttering if preview quality is set to “high”.
Any ideas, guys??