I've just uploaded this scenario: http://www.greenfoot.org/scenarios/5764 maybe it helps! This is the same engine as in my Jump! game: http://www.greenfoot.org/scenarios/4734

@Builderboy2005 Line drawing time for Graphics object: 0,002 mills Mine: 0,03 millis or 0,02 mills. Both a line from loc (600,0) to (0,400). So mine is slower :(