SurfaceView lockCanvas is very slow

build.gradle

// Added this line to dependecies

api 'com.google.guava:guava:25.1-android'

CustomSurfView.java

package com.example.bkmz.surface_view_test;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class CustomSurfView extends SurfaceView implements SurfaceHolder.Callback {

    private MyThread thread;

    public CustomSurfView(Context context) {
        super(context);
        getHolder().addCallback(this);
        setFocusable(true);
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        thread = new MyThread(getHolder(), this);
        thread.start();
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {

    }

    public void update(){

    }

    public void myDraw(Canvas canvas) {
        super.draw(canvas);
        canvas.drawColor(Color.WHITE);
    }

}

MainActivity,java

package com.example.bkmz.surface_view_test;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
//        setContentView(R.layout.activity_main);
        CustomSurfView customSurfView = new CustomSurfView(this);
        setContentView(customSurfView);
    }
}

MyThread.java

package com.example.bkmz.surface_view_test;

import android.graphics.Canvas;
import android.util.Log;
import android.view.SurfaceHolder;

import com.google.common.base.Stopwatch;

import java.util.concurrent.TimeUnit;

public class MyThread extends Thread {
    private SurfaceHolder surfaceHolder;
    private CustomSurfView customSurfView;


    public MyThread(SurfaceHolder surfaceHolder, CustomSurfView customSurfView) {
        super();
        this.surfaceHolder = surfaceHolder;
        this.customSurfView = customSurfView;

    }

    @Override
    public void run() {
        Canvas canvas = null;
//        StopWatch
        Stopwatch stopwatch = Stopwatch.createUnstarted();

        while (true){
            try {
                synchronized (surfaceHolder) {
                    stopwatch.reset();
                    stopwatch.start();

                    canvas = this.surfaceHolder.lockCanvas();
                    stopwatch.stop();
                    Log.d("MyThread", String.format("lockCanvas: %.1fms", stopwatch.elapsed(TimeUnit.MICROSECONDS)/1000f));


                    customSurfView.update();
                    customSurfView.myDraw(canvas);
                }
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                if (canvas != null){
                    try {
                        surfaceHolder.unlockCanvasAndPost(canvas);
                    } catch (Exception e) { e.printStackTrace(); }
                }
            }

            try {
                Thread.sleep(16);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

        }
    }
}