Sometimes weird network stuff happens after an update. I'd suggest doing a hard reboot of your console, and your modem and or/router, just to reinitialize things to see if that helps with the connection/lag stuff. Which parts of Felwinter's Peak are not accessible? Yes, Iron Banner is always a limited-time deal. It runs for one week at a time, Tuesday through Monday. It will come around again in a month or so. You can hold off on your unfinished bounties until then if you want, and have a head start on getting them done. If you delete them, you can get them again next time, but you'll have to start from scratch. Also, note that each time Iron Banner comes around, your rank will reset to zero.