I am having trouble when I have two files open at once with SW slowing down to a crawl. It can take 10-15 seconds to pan! This happens when I have any two files open at the same time like two part files, an assembly and a part, or even a part and a drawing of the part. This started a few days ago and I am the only one here with the issue. I changed nothing and added nothing to the pc during this time. Any ideas?