Почему gulp собирает pug и scss по 5 — 10 секунд?

gulp.task('styles', function () {
  return gulp.src('source/styles/scss/**/*.scss')
    .pipe(sass())
    .pipe(gulp.dest('public/css'))
    .pipe(rename('all.min.css'))
});

gulp.task('styles', function() { //gulp-sass
      return gulp.src('_/components/sass/**/*.sass')
        .pipe(sass({ style: 'expanded' }))
        .pipe(autoprefixer({browsers: ['last 2 versions', 'ie 11', 'Android >= 4.1', 'Safari >= 8', 'iOS >= 8']}))
        .pipe(duration('rebuilding files'))
        .pipe(gulp.dest('app/assets/temp'))
        .pipe(minifycss())
        .pipe(gulp.dest('public_html/css'))
});