Problem entering ultimate team

Without testing over a wire, we can't rule out wireless is the issue. It is the most common reason for disconnects and lag. Unfortunately, there's nothing else we can do. The best I can advise is to optimize your wireless connection, but that won't help too much with the distance between your system and the router. You can always try putting your device on it's own wireless channel. If your router supports QoS, you could try prioritizing the device you're playing on.