How to reduce the slow loading of IOS XCODE simulator

for example: I have just built a forHello project, and when I click to run the simulator, the previous projects are also displayed (as shown in the figure: BackGround,ChineseZodiac,layoutContrains, etc.), and then the simulator enters my forHello project.
every time I start the simulator, it is very slow. Is there any way to just open the project I am running when the simulator starts? That is, in the picture, there are no other icons?

the environmental background of the problems and what methods you have tried

related codes

/ / Please paste the code text below (do not replace the code with pictures)

what result do you expect? What is the error message actually seen?

Jun.23,2021

the simulator is a little slow to open, and has nothing to do with other applications. Don't turn off the simulator every time you recompile and debug. It's very fast.

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