What effects and footages do you use and what are your composition settings? Sounds like your media cache is getting full, or which is the other case that would fit your description, a specific plug-in is not releasing memory when it better should. This in particular happens with some OpenGL-driven plug-ins that cannot hold all "textures" on the graphics card and then start to request more and more memory... I'd look into that.
Thanks for the reply - I'll have a look at the article.
The comp is 1920X1080, the footage is various sources, mostly tiff sequences and jpgs, but theres the occational text layer, psd and ai file as well.
I've narrowed it down to a specific plugin - it starts the moment I apply it.
Thank you for your insight!
Pål G, Norway
so which plugin was it?
i have a similar problem with an i7 and 16 gig ram it starts to writng to disk(even though i disable the disk cache)
and takes up to 15 minutes.
mostly when i want to ram preview.
I thought it was a demo version of sapphire I had recently installed, I've uninstalled it now, but I'm not sure if it has gotten any better actually.
I'll report back.