Yes most tiling solutions on KDE are half-baked even the new built-in (at least the last time I tried) but Krohnkite is really solid. It was forked to Bismuth, then that one got defunct after a major kwin update. But it’s back again as Krohnkite (infinite thanks to the maintainers). It’s rock solid and even has a B-Tree Layout now. I’m on X11 but the last time I tried it also worked nice with Wayland.

Meanwhile in Mexico:

https://lwn.net/Articles/1013776/