Recently just played AOE3 with a few friends, we were an hour into the game when suddenly we got an Out of Sync error and all of us got kicked out to the menu during the heat of the match. This has been going on since 2005 or so from what I can tell with every game that uses ESO. It is extremely simple to exploit, yet occurs easily on its own anyway. I can’t remember the last full match I finished in AOE3 online. Please don’t use ESO for AOE4, implement a different online service that isn’t exploitable if you (Relic) haven’t already.
It’s probably naive of me to even think they’d use anything but ESO, in which case, god save us all.