Back in the past days of DOS, you had to setup every program that used a GUI to use the correct display adapter and monitor.
Errors in WYSIWYG mode were almost always the result of the graphics configuration of the program not matching the system hardware.
Even when using a DOS Window under XP, the graphics driver is still handled by the application.
I cannot just hook up my DOS machine at this moment. So, I cannot give you detailed step by step instructions. Under settings or configuration in QPRO, there is an option to select your graphics adapter.
Or, you may just need to resurrect on old system with a 2M PCI graphics card.
Chas