In my wordpress site most of the pages are takes a lots of time to load. Some time some of pages takes more than 30 seconds. I have checked the speed issue in gtmetrix. It's showing "PageSpeed Score" over 90% and "YSlow Score" over 75%. But page fully loaded time is 13S.
I have used "W3 Total Cache" plugin for enable cache data. Site url : https://www.customdesignprinting.com/store/marlborough-boys-college-old-boys/
In my site I have to use "init" hooks for multiple times for different type of checking. Is it the reason behind it ?
Can you please suggest me how I can improve the page speed ?