I find it pretty solid if a bit bare bones. With the basics in place, it should improve fairly quickly.

They are planning a 26.04 LTS release. We will see what it looks like by then.

I have been using it as a daily driver since before it went beta. After the beta, I have found it quite stable. And recently it have been rock solid. There are still some things missing (like it would be nice with a calendar app, support for firmware upgrades and so on), and some things that are a bit rough. But overall I find it to be a quite good release, and since nothing comes close to their window management (the tiling implementation is really great) it compensates for any minor rough edges you might find.

Last I had it on my desktop was like 2 months ago. Oddities with games here and there was a deal breaker for me. Don't remember if I could alt tab over video game windows yet. Not being able to alt-tab other windows over a video game is a deal breaker for me. There were random nich applications I don't recall that didn't handle dialog windows/file pickers well. That may be better by now. The file explorer is really bare bones even compared to nautilus. Not expecting Dolphin but I want something better.

High hopes though. I may give it another go as my primary with 26.04. The Cosmic applications are all pretty fast. I think I like how it looks more than KDE just KDE is way more fully featured