Memory Usage?

Sorry if this has been mentioned before but, I'm running PWI and the memory usage is insane! upwards of 500MB RAM for a client! D:

Is there a way to lower it's memory usage? Why is it using so much? -_-

500Mb it isn't a lot of
i have 1,5 - 1,7 Gb usage in Dragon City
it`s impossible to reduce

P.S. maybe possible, but only "Beijing Perfect World Company" programmers know how :)