I thought that this suggestion by JohnnyRoy shouldn't get buried in http://www.sonycreativesoftware.com/forums/ShowMessage.asp?MessageID=676393&Replies=19This Post [/link]:
Here's an idea if you really do need to do deep zooming... Delete everything in the project except the 8MP images and save it as a new name. Then render just the 8MP images out as video. Then add the video back to your original project. This will eliminate those large images from the equation. Like I said... large image support works great in on Vista 64 with 8GB of memory... not so good with XP32 and 2GB of memory limit.
I can't see doing that until I'm certain that I'm done with ALL editing and thus won't need to move the images around again, but once set, I could see this eliminating some annoying rendering glitches.
Here's an idea if you really do need to do deep zooming... Delete everything in the project except the 8MP images and save it as a new name. Then render just the 8MP images out as video. Then add the video back to your original project. This will eliminate those large images from the equation. Like I said... large image support works great in on Vista 64 with 8GB of memory... not so good with XP32 and 2GB of memory limit.
I can't see doing that until I'm certain that I'm done with ALL editing and thus won't need to move the images around again, but once set, I could see this eliminating some annoying rendering glitches.