I was on a team with a GC player, but they froze about 45 minutes into the game. GC players see some of the lobby (notably the information desk I think is smaller on GC) and other geographic areas a bit different that we do. For some reason, this is one of the notable differences Sega made for the GC version. I may be misinformed by some players I was on line with about 10 years ago, but "some" players I was on various teams with claimed they were GC players (pre-Sylverant). to note, none of them FSOD'ed.
Although I played this game for well over a decade, I still do not know much about the "details" of the game, I just play when I have free time and move on to many other things once I'm out (thus why I do not ask Ives "things PSO"; he's too knowledgeable for me to approach).