Gulp slowly working on windows 10 pro (clean)

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"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?

Use the provided Gulp task configuration as the entry point, especially the default, build, watch, css:build, and js:build tasks. Run the default or build workflow on Windows, compare timings across the listed tasks, and inspect the Sass and JavaScript pipelines for the slowdown. Done means the cause is reproducible and the affected workflow completes without the reported delay.

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