No,I don’t know of a way to turn off the GPS. I turned off the WiFi on my controller. But I think this is only the WiFi you use to connect the controller to the internet. I don’t think it is the WiFi used to fly the unit. I was just trying to make sure it was ok to do this. Evidently it is ok because I have made several flights with it turned off.
I seem to remember reading somewhere that this is a good idea. I always have mine turned off... It's only on when I am downloading updates for the Karma. I can't remember where I read it...But someone indicated that having it on was a possible source of wi-fi interference, which could reduce the distance or range you can fly your Karma.