CMS version 4.0 does not allow the curser movement to be as smooth as previous versions. During a window zoom the window follows behind the curser substantially. During a move operation the item being moved is very jumpy and hard to control smoothly.
Anyone know why?

I had the same problem only once. I think it has something to do with the UCS setting. Either I pulled up an ACAD drawing that had the UCS set to something other than "view" or something. In any case it went away and didn't re-appear.