From reports online the UDM-SE won’t actually NAT close to 10 Gbps and the manufacturer doesn’t provide any NAT performance numbers…so it becomes a bottle neck if you have 10 Gbps internet which is widely available and not that expensive my part of the world. (Hong Kong).

The only reasonably priced router I could find about 6 months ago that would NAT at line speed was the TP-LINK Onada ER8411. I ended up going with an all Oanda network which seems to work fine but ubiquiti had originally been my first choice.