Is there a page builder for WP that is like Squarespace's current Fluid Engine?

Has anyone used this new Fluid Engine 7.1 and knows a very similar page-builder for WordPress that doesn't slow sites down and doesn't break with updates (and basically has given you no trouble whatsoever??). Because I would love to design WP sites in a page builder like this.

Previously, I've had nothing but bad experiences with page builders and did not like dealing with Squarespace in the past, either (many years ago). But, this is different. This thing makes it awesomely easy to create desktop and mobile layouts without feeling like I'm struggling with buggy UI or compromising in annoying ways on the design or page load speeds. I'd really love something exacty like this inside WordPress!