...
There's two batch files, "- Editor 32-bit.bat" and "- Editor 64-bit.bat" inside the SDK directory (default: C:\Program Files (x86)\Steam\steamapps\common\chivalrymedievalwarfarebeta) that will open the 32-bit and 64-bit versions of the editor, respectively. The 64-bit editor is faster and is recommended.
Saving a new map and new asset packages
...