So is there a fix that has helped anyone avoid these error codes? I haven't been able to play for at least 2 weeks because of these codes. I've tried UPnP, resetting UPnP, Port forwarding, DMZ hosting, Application forwarding, using a router in bridge mode, QoS settings Just for D2, tried router bridging with Gateway, refreshing DSLAM by having no line for 15 minutes, and still no luck. Some say it's my internet but it used to work before and used to do everything without problems and now I can't even do nightfall without lagging out when entering a new area. My Gateway is a GT784WN with the up-to-date firmware. I have an Xbox one with open NAT type btw.