hi, this change rotation speed after every 8 seconds
but there is jerkiness every time before rotation changes
how to avoid that?
so speed a simply changes to speed b

1. float x,speed=0.02;
   
   void setup() {
     size(640, 360);
     noStroke();
     fill(255);
     rectMode(CENTER);
   }
   
   void draw() {
     background(51);
   
     if (second() % 8 == 0) { 
      speed = random(-0.05, 0.05);
     }
   
     translate(width/2, height/2);
     rotate(x);
     rect(0, 0, 180, 180);
   x+=speed; 
   }