It doesn’t look the same problem. This is more likely a problem with the UDP traffic overwhelming your router. Quite uncommon indeed. There is congestion control in the NX protocol aimed at preventing this. The only cases where we encountered a similar problem was during development, due to some bug that prevented the congestion control to work correctly, and only with some routers. What the router should do, in these cases, is just throwing away packets, not certainly drop the Internet connection. Try disabling UDP in Edit -> Advanced settings.
