Render contents invisible for a flash second

[wildfiremedia]

Just wonder if we could find way to improve render that you will not notice the loading new content went invisible for a <1s until the content is render?

I under with the Title, seem to have a delay in rendering which can be annoy to our eyes.

<div>
    <div>Title</div>
    <div x-data="..."></div>
</div>

When the code does not have any HTML element above x-data section, page will render immediate, you won't notice invisible flash of content.

<div>
    <div x=data="..."></div>
</div>

It could be done with having title with x-text but applying this approach is like littering other HTML e.g. navigation menu, ads space, etc that is not SEO friendly.

<h1 x-data x-text="'Hello Title'"></h1>

What are other approach we could improve rendering?