plasma 6 Stuck upon entry, filesystem no response

[linting]

Why does it lag for tens of seconds when I enter kde-plasma 6, whether from Wayland or X11? If I enter from Wayland, there is still a large black block on the mouse cursor. After normal display, there will be a notification that the file system is not responding. Dolphin also lags every time it is opened. What is the problem with it? Thank you for your response.