Very long compilation of Gulp + gulp-sass. What can be done about it?

Question

JavaScript

Hello! I use gulp + sass to build the frontend. There is a main app.scss file, which includes styles for different components, there can be quite a lot of them. The first 5-10 minutes after running gulp default everything is fine, then the sass compiler (gulp-sass) starts thinking too long, there is no longer any patience. I am attaching part of gulpfile.js.
System Win x64, i3, 8 GB of RAM (if it matters).
Gulp v4, Node v.6.9.0, npm v3.10.8
What could be the problem, comrades?

//Тут пути для подключения scss/css
var styles_paths = [
  'lib/foundation-sites/scss',
  'lib/motion-ui/src',
  'lib/components-font-awesome/scss',
  'lib/malihu-custom-scrollbar-plugin',
  'lib/fancybox/source'

]

// компиляция SCSS
function styles() {
  return gulp.src(path.src + '/scss/app.scss')
    // компилируем scss в css:
    .pipe(debug({title: 'css:'}))
    .pipe(sass({
      includePaths: styles_paths
    }).on('error', sass.logError))
    // добавляем вендорные префиксы:
    .pipe($if(PRODUCTION, autoprefixer({
      browsers: ['last 5 versions', 'ie >= 9'],
    })))
    // минимизируем, если стоит флаг --production:
    .pipe($if(PRODUCTION, cssmin()))
    .pipe(gulp.dest(path.dist + '/css'))
    .pipe(browser.reload({ stream: true }));
}

// Задача сборки проекта, запуск gulp build
gulp.task('build',
  gulp.series(clean, sprite, gulp.parallel(copy, styles, javascript, images)));

// Задача по умолчанию
gulp.task('default',
  gulp.series('build', server, watch));

// Отслеживаем изменения и запускаем соответствующую задачу
function watch() {
  gulp.watch(copy_paths).on('all', gulp.series(copy, browser.reload));
  gulp.watch(path.src + '/scss/**/*.scss').on('all', gulp.series(styles, browser.reload));
  gulp.watch(path.src + '/js/**/*.js').on('all', gulp.series(javascript, browser.reload));
  gulp.watch(path.src + '/img/**/*').on('all', gulp.series(images, browser.reload));
  gulp.watch(path.src + '/img/sprite/**/*').on('all', gulp.series(sprite, browser.reload));
}

Answer 1

I found a solution to this problem, Why does gulp-sass progressively increase the execution time of a task?

Answer 2

I forgot to indicate that I'm using Sublime Text 3. Apparently, the "atomic_save": true parameter, which was set after reading this topic, is to blame. After I set it to false, the app.scss file fell off, watch stupidly ignored it - i.e. mask path.src + '/scss/**/*.scss' did not work. Corrected it like this

gulp.watch([path.src + '/scss/**/*.scss', path.src + '/scss/*.scss']).on('all', gulp.series(styles, browser.reload));