There’s an option in the Advanced Settings menu that can be used for your time-lapse videos.   On Windows this option is called: "Frame Blend (Motion Blur)".  On Macs this option is called "Motion Blur".

Selecting this option tells GoPro Studio to correct for the camera’s automatic exposure that can sometimes result in a flickering effect in time-lapse videos.  This balances out exposure changes for a smooth transition from frame to frame.