I've been on Win11 since release. I'm also in the Insider Preview beta channel. No crashes or major issues so far. I do still think the UI is half-baked. There are lots of inconsistencies in the context menus, config pages, etc. Plus functionality that used to be there for the Taskbar has been removed, which is annoying. I realize they rewrote the entire Taskbar logic, but Win 10's Taskbar was much more customizable. Time will tell if MS homogenizes the menus & screens, and brings back lost functionality.