Now because of the 48fps setting, I needed to set my shutter speed to around 1/100th to reduce too much motion blur. Finally when working with an F/4 Lens (Panasonic 7-14mm), this also cuts down on the amount of incoming light, so I needed to work with a minimum of ISO 1600.
To control noise, I shot the entire video in 4K and exported to 1080. By downscaling you can mask noise. Also I shot in CinelikeD and exposed to the right (slightly over exposed), which means bringing the exposure down in post and that helps to clean up any noise in the shadows.