CSS Variable has taken the frontend development by storm. I was skeptical of it because I'm used to Sass variable. But it's more powerful than that.
We are often blinded by these fancy Block editor that we forgot our root, which is shortcode. It's not a good root, but at least it served us well.
If you have a simple ACF Repeater Field, try replacing it with a plain Table. Other than being easier to edit, the performance is much better.
There are a lot of plugins to disable Gutenberg editor. But the code to disable it is actually very short and simple. So no need for plugin, just add this snippet in…