If it will be ok., you will be able to write new config file by press buttons at running sgminer "S" -> "W" -> file name.
And after the you would make changes on it to your necessary settings.
I don't understand what it is "write new config file by press buttons at running sgminer "S" -> "W" -> file name". I run my Sgminer with .bat file, but it fell!
just look at the sgminer running window and you will see the hot-key:
[P]ool management [G]PU management [S]etting [D]isplay options [Q]uit
by them you would make changes "on the fly" while sgminer is run.
..so you able to make any changes with it, like the gpu setting or any other and
write your own new config file by:
push "S" (Setting) -> "W" (Write config file) -> type file name for this config.
each time you can make the new config file included the changes that you will made "on the fly".