pot delay means that you can youse the next potion 15 seconds after the
one you have used. therefor, the role of healers (as in clerics) is so important
in Europe. the tanks take hits but cant spam their potions like in china, so
they need somebody that constantly heals them or they will die
edit: nevermind you mean the delay in china sro probably.. i was talking about
euro. well the delay is part of the autopotion option. you can click that option
if you want to control the times between the potions you use. for example
if you get 150hp from the potion, and the auto potion function uses potions
too quick after another, you can adjust that time so you use less potions which
means less money.