All five of my forums are on the same server and always have been, but for some reason S.C. seems to have the most performance issues. I've never been able to figure out the problem since all the sites run the same software. I'm hoping that the latest server upgrade will make the performance pretty snappy for everyone. As of yesterday, our hosting company offers enterprise-grade SSD storage (at a significant premium), and I jumped on that right away. Let me know how the site speed seems for you.