The biggest issue I have with Gutenberg is the typing latency when you are editing a standard 6 paragraph blog post with 2-3 images. On my laptop I can actually see the latency while typing. Characters appear on the screen seconds after typing them like a slow motion reveal frequently used in school PowerPoint presentation by kids to to look cool.

It's maddening to see this much latency while typing a bunch of plain text on a machine than can comfortably handle big Android Studio projects without any such latency issues. Modern web really is a dumpster fire.