Seems a number of issues with Vegas (and other) programs relate to graphic cards and often the conventional wisdom is to update the driver. I just had occasion to contact AMD about a driver update for my laptop, and part of their (prompt) response to me was, in my opinion, significant: "NOTE: Please ensure that you remove/uninstall the existing driver completely from the system using the DDU tool, using DDU Utility (Display Driver Uninstaller) by launching it in Safe mode. It will help you completely uninstall AMD graphics card drivers and packages from your system, without leaving leftovers behind. Because, overwriting the driver files could lead to some issues."