Why Your Website's Speed Is a Trust Signal
Core Web Vitals measure three ordinary human experiences, and template stacks fail them by construction rather than by accident.
A slow site does not read as slow. It reads as unserious.
People do not experience a slow website as slow. They experience it as doubt.
Nobody watches a page load and thinks about hosting. They think, quietly and without articulating it, that this business might not be all that current. Then they go back. The judgement happens well before anyone has read a word about what you do.
Google measures roughly the same thing, and gave it a name.
Core Web Vitals, in human terms
Largest Contentful Paint asks when the main thing on the screen actually appeared. Not the first pixel, the thing the visitor came for: the headline, the hero, the photograph. It is the answer to did this page show up.
Interaction to Next Paint asks whether the page responds when touched. Tap a menu and watch nothing happen for half a second and you will tap it again. That gap is what this measures.
Cumulative Layout Shift asks whether the page holds still. Everyone has tried to tap a link and hit an ad that loaded underneath their thumb. That is a layout shift, and it is the most irritating of the three.
None of these are technical abstractions. They are three ordinary experiences with names attached.
Why template stacks fail them
Not through neglect. By construction.
A page builder has to be able to render anything you might drag onto the page, so it ships the code for all of it whether or not you used it. Every plugin adds its own scripts and styles, each loaded on every page in case it is needed. A theme sits on a framework, which sits on the platform. Third-party embeds arrive whenever they arrive, and the layout moves when they do.
The result is a page that has to download and execute a large amount of code before it can show a visitor a sentence. No amount of caching fixes an architecture that is doing the wrong work.
What hand-built code changes
A custom-coded website ships the code that page needs and nothing else. Images are sized and served in modern formats. Fonts are loaded so text is readable immediately rather than after a flash. Space is reserved for anything that arrives late, so the layout does not jump.
That is not clever optimization. It is the default when nobody has to support every possible page at once.
The full argument for owning the site rather than renting it is in why San Diego businesses are switching to custom-coded websites. If your site takes a moment too long, see what the Studio builds.