Program is lagging

Hi, I'm having a tough time figuring out why my program is lagging and was wondering if anyone could help. Thank you!! :-)

import processing.video.*;

int d = 40;
float xo;
float yo;
float zoom = 1;
float angle = 0;
int borderStroke = 50;
float counter;
PImage img;
PFont font;
float[] posx;
float[] velx;
float[] massx;
char[] letter = new char[]{'M','A','G','A','Z', 'I', 'N', 'E'};
int xPos=200;
int xDir=10;
PImage click;
PImage collage2;
PImage collage3;
PImage collage4;
PImage collage5;
PImage border2;
PImage sign;
PImage sign2;
PImage sign3;
Movie myMovie[];
float t0;
float t;
int index = 0;

void setup () {
  size (2000, 1000);
  xo = width/2;
  yo = height/2;
  smooth();
  noStroke();
  fill(206, 10, 10);
  img=loadImage("cherries.gif");
  font = loadFont("Baskerville-BoldItalic-48.vlw");
  textFont(font, 248 );


  posx = new float[] {0,0,0,0,0,0,0,0};
  velx = new float[] {0,0,0,0,0,0,0,0};
  massx = new float[] {random(10)+1,random(10)+1,random(10)+1,random(10)+1,random(10)+1,random(10)+1,random(10)+1,random(10)+1};

   myMovie = new Movie[4];

myMovie[0]  = new Movie(this, "Paula.mp4");
myMovie[1]  = new Movie(this, "brit.mp4");
myMovie[2]  = new Movie(this, "linds.mp4");
myMovie[3]  = new Movie(this, "MJ.mp4");


  myMovie[0].pause();
  myMovie[1].pause();
  myMovie[2].pause();
  myMovie[3].pause();
}

void draw() {
  for(int i =0; i < 8; i++) {
    if ( posx[i] + velx[i] > 300 ) {
      posx[i] = 300;
      velx[i] = -velx[i] * 0.5;
    } else {
      posx[i] += velx[i];
    }
     velx[i] += 10 / massx[i];
  }

 background(255,182,193);
 translate (xo, yo);
 scale (zoom);
 rotate (angle);

 border2 = loadImage("border2.png");
 image(border2, -1000, -500);
 image(border2, 1000, -500);
 image(border2, -3000, -500);
 image(border2, -1000, -1500);
 image(border2, 1000, -1500);
 image(border2, -3000, -1500);
 image(border2, -1000, 500);
 image(border2, 1000, 500);
 image(border2, -3000, 500);

click = loadImage("clickpage.jpg");
image(click, xPos, 325, 300, 100);


collage2 = loadImage("collage2.png");
collage2.resize(1900, 900);
image(collage2, 1060, 550);
sign = loadImage("sign.png");
image(sign, 2180, -230);


collage3 = loadImage("collage3.png");
collage3.resize(1900, 900);
image(collage3, -953, 550);


collage4  = loadImage("collage4.png");
collage4.resize(1900,900);
image(collage4, 1055, -460);
sign2 = loadImage("sign2.png");
image(sign2, 350, 770);

collage5 = loadImage("linds.png");
image(collage5, -2948, -450);
sign3 = loadImage("sign3.png");
image(sign3, -2250, -430);


  xPos=xPos+xDir;
  if (xPos>400 || xPos<-850)
  {
    xDir=-xDir;
  }

   if (myMovie[index].available() ) {
    myMovie[index].read();
  }

  image(myMovie[0], 1760, -25, 510, 398);
  image(myMovie[1], -270, 990, 580, 460);
  image(myMovie[2], -2270, -50, 520, 410);
 // image(myMovie[3],


  if (t > myMovie[index].duration() + t0) {
    println("finished! "+index);
  }

  t  = millis()/1000;

PImage cheetah = loadImage("cheetah.jpg");
  cheetah.resize(1800, 600);
  image(cheetah, -900, -300);
  image(img, 800,250);
  image(img, -950, -450);

 for( int i=0; i < 8; i++ ) {
    pushMatrix();
    float y = map( i, 0,4, -350, 500);
    translate( width/2 + y, posx[i]);
    text(letter[i], -1500, 0 );
    popMatrix();
  }
}

void movieEvent(Movie m) {
  m.read();
 }

void keyPressed() {
  if (key == CODED) {
    if (keyCode == UP) {
      zoom += .03;
    }
    else if (keyCode == DOWN) {
      zoom -= .03;
    }
    else if (keyCode == RIGHT) {
      angle += .03;
    }
    else if (keyCode == LEFT) {
      angle -= .03;
    }
  }
  if (key == 32)
  {
    angle = 0;
    zoom = 1;
    xo = width/2;
    yo = height/2;
  }

  if (key == '1') {
    myMovie[0].play();
    myMovie[1].stop();
    myMovie[2].stop();
    myMovie[3].stop();
    index = 0;
    t0 = millis()/1000;
  }

  if (key == '2') {
    myMovie[1].play();
    myMovie[0].stop();
    myMovie[2].stop();
    myMovie[3].stop();
    index = 1;
    t0 = millis()/1000;
  }
  if (key == '3') {
    myMovie[2].play();
    myMovie[0].stop();
    myMovie[1].stop();
    myMovie[3].stop();
    index = 2;
    t0 = millis()/1000;
  }

  if (key == '4') {
    myMovie[3].play();
    myMovie[0].stop();
    myMovie[1].stop();
    myMovie[2].stop();
    index = 3;
    t0 = millis()/1000;
  }

if (key == '0'){
 myMovie[0].pause();
 myMovie[1].pause();
 myMovie[2].pause();
 myMovie[3].pause();
  }

}

void mouseDragged(){
  xo= xo + (mouseX - pmouseX);
  yo = yo + (mouseY - pmouseY);
}