I've noticed that the NAT Type keeps failing between 11pm and 1am most nights in the past week. This is becoming a problem as an avid gamer, who is currently grinding the hardest difficulty of my favoured game to gain items needed for the hardest content, and these items are lost every time the NAT Type fails out of nowhere, which is causing myself anger as the drop rates for these items are extremely low, so losing them through no fault of my own is concerning.
The NAT Type failure also stops everything working on my smartphone at the same time, so I have no way of communicating with anyone until the NAT Type restores itself, which can be anything from 15 mins to an hour before it's resolved.
All solutions to this problem require a PC on the same broadband network to be able to fix it, which I don't have.
Why is the NAT Type so unstable on your network alately? On my PS4 Pro it is always set to 2, as there's no way of changing it to 1 or 3.
