The Xbox 360 version of Persona 4 Arena is facing more than expected lag issues during network play, the official Persona blog said in an update today.
Atlus has apologized for the inconvenience, and is investigating the cause. It promises a followup report when it’s understood the circumstances.
In the meantime, Atlus suggests Xbox 360 owners try the following settings. After selecting “Custom Match,” set your network settings to “Same Area Only” and speed time to “Good Connection Only.”