game-editor.com

to avoid slowdown when scaling using draw from function
use multiplication on up and devision on down when Tutochao puts on addition and subtraction in this tutorial
http://www.youtube.com/user/Tutochao#p/c/D64A103737AEC258/9/h8y6D7e-GT0

This works, but remember that it's not a "slowdown". There is no lag, it's just the size increase is the same but the object is much larger. Using multiplication and division are actually more system intensive but should be fine for use here.

ya i know
i should say to be relative to the enlarged pixels not the actual ones
but then some people may get confused