Just downloaded HitFilm 3 Express, and am loving all of it. I'm trying to get used to the software before I get into post on my short film this winter, and was practicing effects on some test shots and noticed the more I effects I add the choppier the image gets. I saw Axel say to preview in RAM in another discussion, but am still confused. Could anyone give me help on this, in detail? Again, I'm just getting into this software and editing, so sorry if this is such a rookie question!