Mobile Movement Choppy in 2d endless runner

This is currently how I am moving my character, which is along the y axis while also being able to move left and right using a phones accelerometer. It seems to move smoothly on the unity player but when I build it to my nexus 6 it moves fairly choppy every few seconds. I've done a lot of research through other questions but I've still come up with nothing. I tried to limit the FPS, change V sync options but I can't find an efficient way to move the character endlessly.

Note: It ran pretty well on my Note 2 (my theory is that the nexus is running at way higher FPS causing performance issues.

  void Update()
     {
 
         if (canMove)
         {
 
             transform.Translate(Vector3.up * Time.deltaTime * speed);            
             
             Vector3 dirx = Vector3.zero;
             if (drunk)
             {
                 dirx.x = -Input.acceleration.x;
             }
             else
             {
                 dirx.x = Input.acceleration.x;
             }
 
             if (dirx.sqrMagnitude > 1)
                 dirx.Normalize();
 
             dirx *= Time.deltaTime;
             transform.Translate(dirx * leftRightSpeed);
         }
 
         // Get current position
         Vector3 pos = transform.position;
 
         // Horizontal contraint
         if (pos.x < minX) pos.x = minX;
         if (pos.x > maxX) pos.x = maxX;
 
         // Update position
         transform.position = pos;
 
     }