Stuttering when using movetowards in a coroutine

I have the following problem with a WebGL project I'm working on:

I have an object which I want to zoom out and move to a specific position at the same time, for this, I've created a coroutine which is called on click. On my computer, everything works perfectly fine, but whenever I try this function on a not that high-end computer, this coroutine stutters a bit.

I've tried deactivating every single shader or sprite that this object is using in order to discard high graphic usage, but the problem persists even if the object is a blank circle.

This is the coroutine I'm using:

  IEnumerator restorePosition() {
    float counter = 0;
    while(counter < duration) {
      counter += Time.deltaTime;

      if (counter > duration) {
        counter = duration;
      }

      float framesPerTime = Vector3.Distance(zoomedTransform.position, storedPosition) / (duration - counter) * Time.deltaTime;
      zoomedTransform.position = Vector3.MoveTowards(zoomedTransform.position, storedPosition, framesPerTime);

      float framesPerTimeZoom = Vector3.Distance(zoomedTransform.localScale, storedScale) / (duration - counter) * Time.deltaTime;
      zoomedTransform.localScale = Vector3.MoveTowards(zoomedTransform.localScale, storedScale, framesPerTimeZoom);

      //restore solar system to original position
      float solarSystemFrames = Vector3.Distance(solarSystem.position, solarSystemStartPOS) / (duration - counter) * Time.deltaTime;
      solarSystem.position = Vector3.MoveTowards(solarSystem.position, solarSystemStartPOS, solarSystemFrames);
      yield return null;
    }

    //zoomedTransform.position = storedPosition;
    zoomed = false;
    spriteMask.frontSortingLayerID = originalFrontLayerID;
    spriteMask.backSortingLayerID = originalBackLayerID;
    zoomedTransform.localScale = storedScale;

    foreach(SpriteRenderer s in spriteChildren) {
      s.sortingLayerName = originalLayer;
    }

    foreach(OrbitController o in planets) {
      o.restartAnimation();     
    }
    inTransition = false;

    //set moon layer  values back to original
    if (moon != null) {
      moon.gameObject.GetComponent<SpriteMask>().isCustomRangeActive = true;
      moon.gameObject.GetComponent<SpriteRenderer>().sortingLayerName = moonLayerName;
      foreach (Transform child in moon) {
        child.GetComponent<SpriteRenderer>().sortingLayerName = moonLayerName;
      }
      moon.GetComponent<MoonBehaviour>().zoomOut();
      //reset null transform and layer names
      moon = null;
      moonLayerName = null;
    }
    yield break;
  }

Could you give me an idea of what I'm doing wrong? , I've also tried Lerp and that didn't solve the problem. Thank you!