I know I've seen other people who have had the same issues as well, and they were also running Windows. The RAM is brand new, so I know it's not a hardware issue.

Do you think that it could be the fact that it was an imported IGES file? Or do you think it's that I run Windows? Are there any manual tweaks that I can make that might be set wrong? I looked through the preferences but wasn't able to see anything useful.

Thanks.