As it turns out, windows mode was not necessary. I also turned off windows for the instruments display in “cockpit display extraction”, because each individual window, for a given cockpit instrument, was appearing I could see before entering into the main 3D world. What solved the original issue was setting the “Falcon BMS.exe” compatibility for DPI status management. I think the issue is that I have the windows scaling set to %125 for other than Falcon BMS. So the compatibility for managing the DPI scaling to “application” for the executable is the solution.
D