How to load animation quicker/Make animation more responsive

Hello fellow programmers! This is my first question on the forums so I hope I can get the most out of it!

Just recently I released my fist app on Android and it is coming to iOS soon:

https://play.google.com/store/apps/details?id=com.opticodesoftware.galacticrain

(Please give me feedback it is my first game!)

Anyways, lots of people had a bit of problems controlling the shield. I think it is just a problem with how responsive the sheild is on different devices. To play just hold the sheild goes up let go it goes down and you want to deflect the fireballs. So the shield for people when it got to the top would not go down and when it was down at the bottom it would not go up right away. (it will take like 5 seconds).

Script: By the way it uses Event triggers for the buttons so that is why the buttons are in public void methods. using UnityEngine; using System.Collections;

 public class AnimateSheildScript : MonoBehaviour {
 
     public GameObject other;  
     public GameObject other1; 
     public Animator animator; 
     public Animation reverseAnim; 
     public GameObject button; 
 
     public void animationstuff(){
         //Play Animation 
         Debug.Log ("Screen tapped"); 
         other.SetActive (true); 
         other1.SetActive (false); 
     }
 
     public void animationStop(){
         Debug.Log ("Finger Lifted"); 
         animator.speed = -1;
         button.SetActive (true); 
         //if its playing set button active
     }
 
     public void animationswitch(){
         animator.speed = 1; 
     }
 
     public void animationswitch2(){
         animator.speed = -1; 
     }
 }    

Thank you for all help!!

Cheers, Ryan/Opticode Software