Guild Wars 2

How to avoid “diminishing returns”?

changing location, changing whole map? for how long?

Change activity. For how long is unknown. The exact mechanic is unknown and prolly being kept a secret to make it harder for bot-programmers to work around it. Avoiding is prolly very easy as long as your not really botting, but when you see it is active, all you have to do is something else and pretty soon it will go away.