I usually have all windows over 2 - 3 workplaces placed. You can see which windows are open in the dock with the bars to the right from the symbol icons and I use mostly alt + tab to circle between the 3 - 4 windows per workplace. And should I really need a view of all open windows, I can move the mouse to the top right corner and activate the overview 😉
Works for me.
So far it’s good and stable. But to be fair I only have it installed for about 3 weeks. Before that, I played with it in a virtual machine for a month. I decided to test it because I wanted a KDE focused Distro and OpenSuse was recommended to me. Watched this review and gave it a try. Quite happy so far but I may switch to Vanilla OS, should it get a KDE version. I ended up preferring Flatpaks anyway and a Distro that doesn’t allow me to accidentally bork my system, sounds good to my causal ears 😉.