Angle the camera so that there is 70% road, this helps ensure that the part of the road where the action would happen is always correctly exposed.
Check the firmware version is up to date and that you’re viewing the high resolution file.
If you have a polarising filter fitted, ensure its correctly angled to remove dash board glare. To do this place a piece of paper on the dash and swivel it until the reflection disappears.
Check the resolution setting, the higher the resolution the more detail is captured per frame.