Application gets slow - Android App

Hi Team,
I’m automating the Android application. For example, I execute 300 scenarios. The initial scenario execution time is one or two minutes, but after some time, the application gets dead slow; it takes 8 to 15 minutes.

Both scenarios are the same type and mostly the same steps. If anyone has the solution, please let me know.

Thanks in advance.

1 Please add what you use. Appium server version, plugins, drivers and what you use to write tests e.g. Java.
2 Please check if application itself becoming slow or commands executions takes longer time.