I don't own Win-10 but can run the game reliably in Win-8 but use Win-7.
What are your settings in the WW1G Configurator? If not already set, suggest the following:
- Do not install the game in any of the Program Files directories. Install it directly to the selected letter drive in its own unique folder as C:\World War One Gold. (or whatever). I use a partitioned H-D where the game lives quite happily on the E:\ drive in E:\World War 1 Gold.
- Select another resolution such as 1024 x 768 (default is Use Monitor Resolution as I recall) from the dropdown Screen Resolution menu.
- Try selecting "Lock" Full Screen mode box. I found this setting a problem when using Win-XP plus it means that you cannot Alt-Tab out of the game. That said, someone once told me that checking this box solved a number of graphics issues in newer OS but that has not been my experience.
- If using a NVidia card, set WW1G up so that the application manages the graphics. Not sure about other video card brands.
Obviously the usual Windows advice to Run as Administrator and setting the executable for emulating Win-XP apply.
Sorry cannot be more assistance but Good Luck.