The only solution if you get high risks of being disconnected is to play in Offline mode. There's no definitive way of knowing how the soft-ban system (invasion enabled, summon disabled) activate. There's a rumor where your character has a hidden score. When it reaches 0, you get soft-ban (also known as disconnect-ban or summon-ban). When you beat an invader (as being summoned or as a living), your hidden score raise by 1 up to a specific maximum. This item basically reset that hidden counter back to the default value. I wouldn't be surprised if the change to the hidden score is also affected based on which faction you're part of. For example, Way of the Sun could have +2 instead of +1 when defeating an invader while summoned or things like that to the hidden score. Still, being disconnected once seems to not be a problem. Twice or once a couple of times in a day, that could end up badly.