Depends on which type of hacked client you are using. There are the outdated ones which the notify doesn't work, Then there is the New updated "Orape 3.1 27.7"
www mpgh net/forum/showthread.php?t=1026239
Download the .swf and then move it into your desktop.
Set it as a Trusted Location on your pc then you should be good to go when you re-launch!
Hope this helped.
Also with FSV2, I would Press "F1" and go to Visual I believe, and turn FS: from 16 to 4, this is the distance, 16 will lag you a lot because you don't have that big of a screen. And then I normal Drag the Window out but not touching the left / right sides of my screen, about 3-4 inches from it and then I just drag it all the way up and down. And it works fine with no lag. If you have anymore trouble check your CPU. Maybe its not good enough to run Realm of the Mad God on a Hacked client. :P