为什么感觉matla​bR2019b执行例​如clear的命令，​关闭软件时反应有点慢​？

为什么感觉matlabR2019b执行例如clear的命令，关闭软件时反应有点慢？

Google Translation:

Why do I feel that matlabR2019b executes commands such as clear and responds slowly when closing the software?

[Eason]

I also confused about , why the clear command so slowly