Known Issues
Lag and intermittent disconnections may occur, with no permanent fix known at this time. We are currently working with Comcast towards a resolution.
High Firewall settings on this device can cause a number of errors on both the Xbox One and the Xbox 360. We have seen "High packet loss" errors on the Xbox One and several potential errors on the 360 including "MTU", "Internet error", "Live connection". Should any of these errors occur we suggest disabling or setting the firewall to low.
XB1R HADES: Update: (12/24/2014): At this time there is currently no guaranteed fix for these issues and there may not be a fix for some time. This is a firmware issue with the device and not something that Xbox can fix on our end. At this time the best suggestion we can make would be to replace the gateway with a different brand. Currently the **** gateways also share similar issues as well.