/F[ ]number
This option sets the program stack size in bytes. Without this option, the stack size defaults to 1 MB. The number argument can be in decimal or C-language notation. The argument can range from 1 to the maximum stack size accepted by the linker. The linker rounds up the specified value to the nearest 4 bytes. The space between /F and number is optional.
You may need to increase the stack size if your program gets stack-overflow messages.
Other ways to set the stack size
Compiler Options | Setting Compiler Options