How do i get rid of touch lag between touch ending on device and action in game? Or is it possible, on Unity Remote 4 using Nexus 7 2012 with if (Input.touchCount > 0) for touch input?

Having struggled with touch input in games and testing games on an android device i have been using using unity remote 4 on a Nexus 7 2012 (1st Gen) and to master touch input i have been using if (Input.touchCount > 0) on a UI Button which seems to solve my problem as whenever i touch the screen Input.touchCount equals 1 and that works, my code is below;

 public class Left : MonoBehaviour {
     GameObject car;
     int speed = 100;
 
     // Use this for initialization
     void Start ()
     {
        car = GameObject.Find("Car");
     }
 
     // Update is called once per frame
     void Update()
     {
         if (Input.touchCount > 0)
         {
             car.transform.Rotate(Vector3.up * Time.deltaTime * speed);
             Debug.Log("LEFT");
         }
     }
 }

It is very simple code which is easy for me than confusing event managers or other ways to do touch input. But the problem is when I release touch on the button which this code is attached to, both the car rotation and debug logging of "LEFT" continues for a short period, at least one second which could be catastrophic for me when i create simple games focused on reaction.

Thank you for reading my question, I would hope their is a solution to avoid the lag or I can blame it on my old device and unity remote, meaning it would work if i actually released it. Opinions or answers would be much thanked!