So GoPro has the following rules to prevent flights near airports:
- Restricted (Red) NFZ from 0 - 1.5 miles
- Buffer Zone (Orange) NFZ from 1.5 - 5 miles
The difference between what GoPro and DJI do is that DJI allows you to request a manual unlock of Red zones (via email and signed documents), and automatically unlock (using a website) yellow (similar to gopro's orange) zones. GoPro does not allow Red unlocks, and while they don't require unlocking Orange, it is limited to a fraction of the maximum speed while in that zone.
I've yet to discover what the fraction of maximum speed actually is. I'm hoping it's more like 80-90% of maximum speed and not something less. It seems really short sighted and potentially dangerous to limit speed at all in the orange zone. If you need to take evasive actions because you see a plane or helicopter approaching your drone, you need to move as fast as possible. If they were trying to prevent people from flying out of control in that zone, it should be automatically stopped from crossing into a Red zone by the software, so I don't see the point.
https://gopro.com/help/articles/Question_Answer/What-is-a-No-Fly-Zone