VÁLASZ:
We will list them in this article, starting with the most basic ones. We recommend that you follow them in the order they are listed below.
Before diving into the thick of the troubleshooting, you should understand that your Internet Service Provider (ISP) and the way you share the connection speed plays a huge role in how you experience the game.
If you are connected via WiFi, please also bear in mind that you can maximise your gaming experience by connecting via an Ethernet cable instead.
Additionally, if you have NAT related issues or questions, this dedicated article might shed some light on the situation.
Here is the list of steps you can try:
Start by testing your network connection. If the test shows that your connection is limited, try the following steps to improve the connection.
Power cycle your Xbox One console
Reset network hardware
Enable UPnP
Port forwarding
These are the ports you need for Assassin's Creed IV: Black Flag:
TCP: 80, 443
UDP: 3658, 4646
Place the console into the DMZ
External restrictions
This should solve your issue. If not, make sure that the ports needed for Xbox Live are also opened. You can find all the information you need to do this in this Xbox article.
If you continue to have trouble after trying these steps, please feel free to contact us!