Before diving into the thick of the troubleshooting, it is important to understand that your Internet Service Provider (ISP) and the way you share the connection speed play a huge role in how you experience the game.
Start by testing your network connection. If the test shows that your connection is limited, try the below steps in the order listed.
Please try connecting to the game after completing each step to see if the issues have been resolved.
• Power cycle your console.
• Reset network hardware.
• Switch to a wired connection.
• Enable UPnP.
Please contact your ISP for additional information and help with enabling this feature.
• Forward ports used by the game.
Below are the ports you need for Rainbow Six: Siege:
UDP: 3074, 6150, 10000-10099.
This step will also help you establish an Open NAT for your connection with the game.
Please note that you may need to forward additional ports for Xbox Live services.
• Place the console in DMZ.
• Check for external restrictions.
If you continue to experience issues with your connection to the game, please get in touch.