It sounds like you're having trouble with your network connection. We understand it is frustrating to hear that changing your home network can help if it was working previously, but many others have reported success by following the steps on our help pages, which I will post here just in case: http://www.bungie.net/en/Help/Article/11930. I recommend giving special attention to the sections on UPnP, NAT, and Packet Loss. In some cases, even power-cycling the router/modem and the console itself can get rid of these errors, as some of the of the ones you listed are general network errors. If none of the above-mentioned steps work, we are aware that sometimes this is out of the player's control, and we understand this may be an issue you cannot solve alone. In all cases, we’re constantly monitoring and improving our network services to keep Destiny up and running for as many players as possible.