Why does my website takes so long to load despite Good Yslow score. I am using YSlow and gtmetrix to test the speed of my website. I have scored 91% in Page Speed Grade and 89% in YSlow. But the Page load time: 4.67s which is relatively very slow. I have searched everywhere else with similar issue as mine, and it seems no one has found the solution to this yet.
You have 19 requests, totaling 5.3 seconds. The first one took 4.3 seconds (the HTML) with the remainder being the remaining assets including your JS, CSS and images.
Your performance bottleneck isn't on the front-end, it's in the PHP. You need to investigate that side of things a little further. You need to narrow it down to which piece of code is causing the issue. Perhaps you have some SQL which is taking a long time to load, in which case, try turning them off to confirm this is where your problem lies.