Rhye Theme: slow down preloader speed

this.finish = () => {
  return new Promise((resolve, reject) => {
    if (!this.$target.length) {
      window.dispatchEvent(new CustomEvent('arts/preloader/end'));
      resolve(true);
      return;
    }

    this.timeline
      .timeScale(0.8) // <--- add this to slow down animation to 80% of the original speed
      // .delay(0.5) // <--- or add this to delay the finishing animation
      .clear()
      .set(this.cursor.follower.outer, {
        attr: {
          transform: ''
        }
      })
      .to(this.cursor.follower.outer, {
        drawSVG: '0% 100%',
        rotate: 0,
        transformOrigin: 'center center',
        ease: 'expo.inOut',
        duration: 2.0
      }, 'start')
      .add([
        gsap.to(this.counter, {
          duration: 2.0,
          val: this.counter.target,
          ease: 'expo.inOut',
          onUpdate: () => {
            const value = parseFloat(this.counter.val).toFixed(0);
            this.$counter.text(this.counter.prefix + value + this.counter.suffix);
          }
        }),
      ], 'start')
      .add([
        this.tweens.followMouse.play(),
        gsap.to(this.cursor.follower.element, {
          width: this.cursor.follower.size.element.width,
          height: this.cursor.follower.size.element.height,
          ease: 'expo.out',
          duration: 1.2
        }),
        gsap.to(this.cursor.follower.inner, {
          attr: this.cursor.follower.size.inner,
          ease: 'expo.out',
          duration: 1.2,
        }),
        gsap.to(this.cursor.follower.outer, {
          attr: this.cursor.follower.size.outer,
          ease: 'expo.out',
          autoAlpha: 0,
          duration: 1.2,
        }),
      ])
      .add([
        gsap.effects.moveCurtain(this.curtain.element, {
          duration: 1.2
        }),
        gsap.to(this.$content, {
          y: -30,
          delay: 0.1,
          duration: 0.8,
          ease: 'power3.inOut',
        }),
        gsap.to(this.$target, {
          delay: 0.2,
          display: 'none',
          duration: 0.8,
          ease: 'power3.inOut',
        })
      ], '-=1.2')
      .set(window.$pageContent, {
        autoAlpha: 1
      })
      .to(this.curtain.element, {
        autoAlpha: 0,
        delay: 0.4,
        duration: 0.3
      })
      .set([this.$target, this.curtain.element], {
        y: '-100%',
        display: 'none',
      })
      .set(this.cursor.element, {
        clearProps: 'top,left',
        x: '-50%',
        y: '-50%'
      })
      .add(() => {
        window.dispatchEvent(new CustomEvent('arts/preloader/end'));
        window.$body.removeClass('cursor-progress');
        this.tweens.followMouse.kill();
        resolve(true);
      }, '-=0.6')

  });
}