It doesn't sound like it's destinys servers. Look up network settings under help on this Page/app.
You need to be at least nat 2 with the right ports forwarded on your router.
A wired connection is also the way to go as wifi tends to drop out if other users are connected.
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My network setup for the XB1 is fine. It has an open NAT with 40-50ms ping, 35mbps down, and roughly 15mbps up. The ping and up/down speed tests were taken on a PC. Also, the XB1 is always wired.