Of course there many areas which can hinder the performance and speed of your WordPress sites.
As you know from your own experience, a slow website or blog would deter you from staying long.
You will leave the site, even before it can even finished loading.
One area you need to fix is to remove query strings from static resources, if you want to boost the loading speed of your site.
All you need to do is to install this free plugin called "WP Remove Query Strings From Static Resources".
It will definitely get rid of query string from static resources.
Static resources are JavaScript and CSS files.
Remove Query Strings From Static Resources With Free Plugin
This is what you have to do:
2. Go to "Plugins". Click "Add New" button.
3. Type in WP Remove Query Strings From Static Resources in the search box.
4. Then click "Search plugins".
5. Next click "Install Now".
6. Finally click "Activate Plugin".
That's all. No settings no nothing. Simple as that.
Related Tips:
* How To Remove Render-Blocking JavaScript And CSS In Above The Fold Content
* 3 Free Plugins Definitely Speed Up WordPress Loading Time