It's not Bungie but with you. If it was a Bungie problem then there would be a LOT more posts of a issue and Bungie would have issued a warning on Twitter. AND From what you say it was not the D2 servers which are only used for matchmaking and save data. When you were Returned to Orbit it was you being returned to the Destiny server as you lost connection to the host player. Being RTO once or twice may mean a issue with the host player's connection but more than that is also means a issue on your end. So If using wifi switch to cable or use boosters. Reset your router and THEN clear your system's cache. If you get a error code look it up on Bungie.net, Destiny app or Google and follow the help guide. YOU do a internet diagnostic as most ISP will look to see if you have internet not how good the signal quality is. You are looking for poor NAT, data loss or a high signal latency.