What are the strange fps drops in programs written in Processing?

Question

Java

I took up writing my toy, and as a framework I chose the Java-based Processing language. In general, straight to the point. When rendering large objects that overlap each other, the FPS drops catastrophically, in my game ellipses act as such objects. For clarity, I threw in a small program line (Resizing - wheel):
https://www.dropbox.com/s/hgtdyug1sk8yj5j/lib.7z?dl=0
Maybe someone has come across this and knows why this happens?
And separate source code:

float scale = 1;
void setup(){
  size(800,600);
}
void draw(){
  background(0,0,0);
  for(int i=0;i<120;i++){
    fill(255,255,255,130-i);
    ellipse(400,300,i*scale,i*scale);
  }
  textSize(20);
  fill(255);
  text("FPS: "+(int)frameRate, width - 100,30);
}

void mouseWheel(MouseEvent me){ 
  if(scale > 0.5 && scale < 4){
    scale+=-me.getCount()*0.2;
  } else{
    if(scale <= 0.5){
      if(me.getCount() == -1){
        scale+=-me.getCount()*0.2;
      }
    } else{
      if(me.getCount() == 1){
        scale+=-me.getCount()*0.2;
      }
    }
  }   
}

Answer 1

Do you have a percent or vidyukha processing graphics?

Answer 2

translucency hike