Gulp slowly working on windows 10 pro (clean)

[VasilevskyAlex]

"use strict";
var gulp = require("gulp"),
autoprefixer = require("gulp-autoprefixer"),
removeComments = require('gulp-strip-css-comments'),
rename = require("gulp-rename"),
sass = require("gulp-sass"),
cssnano = require("gulp-cssnano"),
rigger = require("gulp-rigger"),
uglify = require("gulp-uglify"),
watch = require("gulp-watch"),
plumber = require("gulp-plumber"),
run = require("run-sequence"),
rimraf = require("rimraf"),
sourcemaps = require('gulp-sourcemaps'),
webserver = require("browser-sync"),
csso = require('gulp-csso'),
cache = require('gulp-cached');

/* Paths to source/build/watch files
=========================*/

var path = {
build: {
// html: "build/",
// fonts: "build/fonts"
js: "build/js",
// img: "images/",
css: "build/css"
},
src: {
html: ".{htm,html}",
js: "js/.js",
css: "sass/style.scss"
// img: "images//.",
// fonts: "fonts//."
},
watch: {
html: ".{htm,html}",
js: "js/**/.js",
css: "sass//*.scss"
// img: "images//.",
// fonts: "fonts/**/."
},
clean: "./build"
};

/* Webserver config
=========================*/

var config = {
server: "",
notify: false,
open: true,
ui: false
};

/* Tasks
=========================*/

gulp.task("webserver", function () {
webserver(config);
});

gulp.task("html:build", function () {
return gulp.src(path.src.html)
.pipe(plumber())
.pipe(rigger())
.pipe(webserver.reload({stream: true}));
});

gulp.task("css:build", function () {
return gulp.src(path.src.css)
.pipe(plumber())
// .pipe(sourcemaps.init())
.pipe(sass())
.pipe(autoprefixer({
browsers: ["last 5 versions"]
}))
.pipe(cssnano({
zindex: false,
discardComments: {
removeAll: true
}
}))
// .pipe(sourcemaps.write(path.build.css))
// .pipe(removeComments())
.pipe(rename("style.min.css"))
// .pipe(sourcemaps.write('.'))
.pipe(gulp.dest(path.build.css))
.pipe(webserver.reload({stream: true}));
});

gulp.task("js:build", function () {
return gulp.src(path.src.js)
.pipe(plumber())
.pipe(rigger())
.pipe(gulp.dest(path.build.js))
.pipe(uglify())
// .pipe(rename("main.min.js"))
.pipe(gulp.dest(path.build.js))
.pipe(webserver.reload({stream: true}));
});

// gulp.task("fonts:build", function() {
// gulp.src(path.src.fonts)
// .pipe(gulp.dest(path.build.fonts));
// });

// gulp.task("image:build", function () {
// gulp.src(path.src.img)
// .pipe(imagemin({
// optimizationLevel: 3,
// progressive: true,
// svgoPlugins: [{removeViewBox: false}],
// interlaced: true
// }))
// .pipe(gulp.dest(path.build.img));
// });

gulp.task("clean", function (cb) {
rimraf(path.clean, cb);
});

gulp.task('build', function (cb) {
run(
"clean",
// 'sass',
"css:build",
"js:build"
// "upload"
// "html:build"
// "fonts:build"
// "image:build"

    , cb);

});

gulp.task("watch", function() {
watch([path.watch.html], function(event, cb) {
gulp.start("html:build");
});
watch([path.watch.css], function(event, cb) {
gulp.start("css:build");
});
watch([path.watch.js], function(event, cb) {
gulp.start("js:build");
});

// watch([path.watch.css, path.watch.js], function(event, cb) {
//     gulp.start("upload");
// });
// watch([path.watch.img], function(event, cb) {
//     gulp.start("image:build");
// });
// watch([path.watch.fonts], function(event, cb) {
//     gulp.start("fonts:build");
// });

});

//
// gulp.task('upload', function() {
//
//
// return gulp.src('build/**/*')
// .pipe(changed(path.build.js, path.build.css))
// .pipe(sftp({
// host: host,
// user: user,
// pass: pass,
// remotePath: remotePath
// }))
// });

gulp.task("default", function (cb) {
run(
"clean",
"build",
"watch",
// 'sass'
"webserver"
, cb);
});

Hello i`m using gulp on my windows 10 pro (clean),

i have sass structure folder (screen)

in folder Blocks i have ~20 scss files.

PC specifications:
Intel core I5 2500k (4cpu) ~3.6Ghz
Ram: 8gb ddr3 1333Mhz
video: gigabyte 1050ti 4gb

at my job i have
Intel i3
~ 4gb ddr3
intel Hd graphics video,

BUT!!! ( ubunut 18 version)
and here gulp working normal

gulp compile first 5 minutes ~200ms (its ok)
after 5 minutes, compile ~5-50s

a year ago i dont have this problem, all were good

gulp ver 3.9.1
node ver 10.10.0
nmp ver 6.4.1

sorry for my English :)

Does anyone know what the problem?