Question How to reduce time spent in Update and GC Unity For Android Game

When I build Samsung M21 & Samsung M20 My game was lag, Display Graphics Buffer Problem.
Please Suggest me what is wrong about it.


using System.Collections;
using System.Collections.Generic;
using PathCreation;
using UnityEngine;

public class Player : MonoBehaviour
{
public static Player Instance;

// Use Path Creator Tools
private PathCreator pathCreator;

// enum State working on When game is Start, Dead And Complete
private enum State { Menu, Game, Dead, Complete }
private State state = State.Menu;

[SerializeField]
private float maxSpeed = 5; // Player Maximum Speed

[SerializeField]
private float accelTime = 0.5f; // Player Controll Speed

[SerializeField]
private Trail trail = null;

private bool speedUp;
private float speed;
private float distanceTravelled;
private float trailDist;
private float totalDistance;

public void Update()
{

if (Input.GetMouseButtonDown(0))
{
speedUp = true;
}

if (Input.GetMouseButtonUp(0))
{
speedUp = false;
}

// Controll Player Speed
float accel = Time.deltaTime * maxSpeed / accelTime;
speed = Mathf.Clamp(speedUp ? speed + accel : speed - accel, 0, maxSpeed);


// This Logic Work When Game is Start
if (state == State.Game)
{
distanceTravelled += speed * Time.deltaTime;
SetPosition();
UIController.Instance.UpdateLevelProgress(distanceTravelled / totalDistance); // See Player Position In UI Progress_Bar

if (distanceTravelled - trailDist > 0.5f)
{
trailDist += 0.5f;
trail.AddCubePoint(transform.position, transform.forward);
}

if (distanceTravelled >= totalDistance) // Game State Complete
{
state = State.Complete;
Game.Instance.CompleteLevel();
}
}
}

// Set Player Starting Position When Game is Start
private void SetPosition()
{
transform.position = pathCreator.path.GetPointAtDistance(distanceTravelled, EndOfPathInstruction.Stop);
Vector3 fwd = pathCreator.path.GetRotationAtDistance(distanceTravelled, EndOfPathInstruction.Stop) * Vector3.forward;
transform.forward = fwd;
}

 

do you have Profiler screenshot?

 

Give us screenshot of your profiler. I recommend using deep profile with callstack so you can see what exactly generates garbage.

 

Unity Version 2020.3.17f1

 

Unity Version 2020.3.17f1

 

Looks like

MathUtility.LockTransformToSpace

produce a lot of garbage (100B for one call).
I recommend to start investigation from that method.
Could you share that method code?

 

[SerializeField, HideInInspector]
PathSpace space;
public PathSpace Space {
get {
return space;
}
set {
if (value != space) {
PathSpace previousSpace = space;
space = value;
UpdateToNewPathSpace (previousSpace);
}
}
}