Hello there,

Issue us present because you are using a lot of additional plugins, and with more plugins and scripts, more  requests have to be handled on page loading which will impact the site speed. This is particularity present on woocommerce pages, because of considerable amount of WooCommerce plugins (your shop page currently have 162 requests). If you are in need for all these plugins, then only solution would be to try to optimize site for speed.

Note that end users should increase performance on their own, and to to make sure that they are using reliable hosting service providers with high resources, and with fast and secure servers.

1) You can check how to optimize your website here: (in this part, minimization of those files will be mentioned): https://gtmetrix.com/

2) Optimize your images with some tool:
www.jpegmini.com/

3) Also you can install some plugin for cache, like WP Fastest Cache:

https://sr.wordpress.org/plugins/wp-fastest-cache/

http://wordpress.org/plugins/wp-super-cache/

https://wordpress.org/plugins/w3-total-cache/

or premium one http://wp-rocket.me/

4) You can enable gzip compression on your server. You should paste this code to .htaccess file located in your folder:

<ifModule mod_gzip.c>
mod_gzip_on Yes
mod_gzip_dechunk Yes
mod_gzip_item_include file .(html?|txt|css|js|php|pl)$
mod_gzip_item_include handler ^cgi-script$
mod_gzip_item_include mime ^text/.*
mod_gzip_item_include mime ^application/x-javascript.*
mod_gzip_item_exclude mime ^image/.*
mod_gzip_item_exclude rspheader ^Content-Encoding:.*gzip.*
</ifModule>

http://www.feedthebot.com/pagespeed/enable-compression.html

5) Leverage browser caching:
http://www.feedthebot.com/pagespeed/leverage-browser-caching.html

6) Use ate least PHP 5.4.x or greater in order to process PHP code faster, and to fix older version bugs. Note that wordpress is now recommending PHP 5.6 or greater https://wordpress.org/about/requirements/

Best Regards!