The JOGL utility class FPSAnimator uses java.util.Timer.schedule() to trigger
redraws of drawables. schedule() suffers from drift so that it's fairly useless
for triggering accurate updates for frame rates above 50 FPS.
Please add a flag to FPSAnimator's constructor to allow the optional use of
java.util.Timer.scheduleAtFixedRate(), which performs better at higher FPSs.
The code changes would occur in FPSAnimator's start() method.