just as i told before on the other topic - i think this solution is bad. there must be no roll backs. cuz it'll make the things worse. imagine the situation - i, as a stranger, join someone's server, we played and then something happens (like activating fridge-trap, accidental lightning or ect). server's host just bans me(or any other player he don't know to abuse the rollback and reverse the bad things that happened to him. and if it's possible theoretically - it may ruin gameplay experience for some players. who don't wanna join other's server just to be banned for nothing.