I recently downloaded and installed the 64 bit version of DraftSight on my Win7 desktop. It seemed to install correctly except for the message (during installation) that I needed to update the video driver on my computer. After the installation was complete I shut it (DraftSight) down and updated my video driver through the device manager. But when I went back into DraftSight the cursor movement was very "jumpy", reminiscent of my experience with AutoCAD when the grid snap is enabled. I looked into the options settings but could find nothing that addressed the unwanted cursor movement. I had hoped that re-booting the computer and re-starting DraftSight would eliminate the problem, but it did not. What is going on? How can I get a stable cursor?