I've been using W11 since it dropped to Dev Insider channels, just like EvilExecutor.
I've noticed some minor graphical hiccups, like the taskbar not actually being centred at times, duplicating tray icons, missing app icons in the taskbar, but nothing that has really affected my use of Windows.
File Explorer feels slow and prone to crashes when interacting with LOTS of files in one folder (several thousands), but I don't know if this was the case in Windows 10 too.