Can someone look at my gulp file and tell me if it can be made more efficient?

It takes far too long usually. On my laptop it literally never finishes. The PHP watch is supposed to be checking for PHP saves in the root and in any sub-directories. I'm not sure if I have the glob correct there, and maybe that's what's causing the problem?

    var gulp = require('gulp');
    var sass = require('gulp-sass');
    var browserSync = require('browser-sync');
    var mmq = require('gulp-merge-media-queries');
    var phpConnect = require('gulp-connect-php');
    var autoPrefixer = require('gulp-autoprefixer');


    gulp.task('sass', function() {
      return gulp.src('assets/css/**/*.scss')
        .pipe(sass()) // Converts Sass to CSS with gulp-sass
        .pipe(autoPrefixer({
                browsers: ['last 2 versions'],
                cascade: false
            }))
        .pipe(gulp.dest('assets/css'));
    });

    gulp.task('connect-sync', function() {
      phpConnect.server({}, function (){
        browserSync({
          proxy: '127.0.0.1:8000'
        });
      });
    });

    gulp.task('mmq', ['sass'], function () {
      gulp.src('assets/css/styles.css')
        .pipe(mmq({
          log: true
        }))
        .pipe(gulp.dest('assets/css'))
        .pipe(browserSync.reload({
          stream: true
    }));
    });

    gulp.task('watch', ['connect-sync', 'sass', 'mmq'], function(){
     gulp.watch('assets/css/**/*.scss', ['sass', 'mmq']);
     gulp.watch('/**/*.php', browserSync.reload);
     gulp.watch('assets/js/**/*.js', browserSync.reload);
      // Other watchers
    });