First of all, never jump on the mailbox in Silverfall. It WILL KILL YOU!
Best to treat Goblin Games the same way people do before entering siege war. Port to Silverfall then restart your game client. Maybe do what you need to do to reset your internet connection if you're experience latency problems. Then enter Goblin Games.
I say all of this because Goblin Games can be funny if you disconnect during a run. So it is best to refresh everything so that you don't have weird glitches like death by mailboxes etc.
Maybe keep up with date/times for maintenance and the daily event/instance resets. If you're in GOBs when daily stuff resets or when servers go down for maintenance you never know what you'll log back into.