I have now graduated to a larger-scale "hobby" project of converting and editing old 16mm footage to DVD. The first segment was 27 minutes and was converted for me by a videographer to a DVD-R. I took the DVD .vob files to my HD and then used DVD2AVI to convert the files to the .avi format. I opened a new project on V4c, laid in the .avi file, and began to work on it. But I am noticing a real slow down as I preview this clip. It will preview at normal speed for about 15 seconds but then the image begins to freeze and then jumps as it advances. Almost like a cache or page file or something is filling up. I'm using a P4 1.3GHz Dell (not sure about the chip set) with 650MB+ memory. Also use a dedicated 200GB HD for video.

This is my first time using such large clips and not sure if this is normal behavior from V4. All I know is that it is making the editing process much more difficult than I expected. Any suggestions?