I get the best/amazing results setting the camera to ISO 2560 and then set the meter to ISO 800. Nice beautiful noise, can easily be removed, if not desired.
When I set the meter to ISO 2560 my footage looks underexposed almost impossible to repair.
Also get great result setting the camera to ISO 5120 and set the meter to ISO 1600, but then noise is strong, still beautiful.
Looks to me the Mavo Edge behaves much like the Alexa (800 ISO) when it comes to speed..