Running really slow for a relatively simple program

[glv]

Hello,

It rocks with:
size(1000, 1000, FX2D);

and

size(1000, 1000, P3D);

P3D rapidly declined as density increased.

I added this to monitor frameRate:

  if (frameCount%5 == 0)
    surface.setTitle(str(frameRate));

https://processing.org/reference/setTitle_.html

There is a comment about FX2D here:
https://processing.org/reference/environment/

:)