I am having this problem with the main menu resolution on 1.5, where it is seems to be running the resolution set in the options menu, but is using the area according to the resolution set on windows.
For example, if I have the resolution in the options menu set at 1600x1200, and my desktop at 1280x1024, the result I see is just the top left corner of the main menu.
The opposite happens if, for example, I set it at 1280x1024 on DCS and my desktop at 1600x1200, then the DCS main menu only takes up a little corner of my monitor.
Is there anyway to set the menus resolution differently than the in-game one (like my desktop resolution) or something, instead of me having to switch resolutions every time I want to play?