I do quite a lot of gaming and even though I have opened the correct ports, there are games that will still show as a strict NAT, which only happens if the ports are still closed. Is this due to some configuration with the Smart Hub that can't be changed? I should note, I do have my computer hard-wired in as well.
Yes, it appears a number of gamers have difficulty setting the Smart Hub for gaming. Lack of a public IP address and NAT being the most commonly discussed shortcomings of the device. You can search the Neighbourhood for other comments on the ZTE MF275R. I have not seen solutions posted, unfortunately.