Is Browser-sync slow?

Question

Preprocessors

Good afternoon.
Suggest a poll.
Browser-sync processes changes slowly from 3 seconds to 5. And how to set up HTML to process it too.
Maybe there is a problem in the firewall (I use Windows 10 - PHPStorm-set autosave 1sec.)? Thank you in advance

const gulp = require ('gulp');
const autoprefixer = require('gulp-autoprefixer');
const cleanCSS = require('gulp-clean-css');
const browserSync = require('browser-sync').create();


const config = {
    src:'./src',
    css: {
        src:'/preassets/css/**/*.css',
        dest:'/assets/css'
    }
};

gulp.task('build', function () {
    gulp.src(config.src + config.css.src)
        .pipe(autoprefixer({
            browsers: ['>0.1%'],
            cascade: false
        }))
        .pipe(cleanCSS())
        .pipe(gulp.dest(config.src + config.css.dest))
        .pipe(browserSync.reload({
            stream:true
        }));
});

gulp.task('watch',['browserSync'], function(){
    gulp.watch(config.src + config.css.src,['build']);
});

gulp.task('browserSync', function() {
    browserSync.init({
        server: {
            baseDir: config.src
        }
    });
});

Answer 1

well, I track changes in all files differently without specifying in gulp-file
, unfortunately I don’t know what OS you are in, but I create a project with windows (for example, "site") then I go to the project through cmd and turn on browser-sync : browser -sync start --server --files *"."* behavior is the same