Android Question Project works slower when not Clean Project?

[artemis]

So, I have a few heavy loops running in my app and it seems that when I do a Clean Project (CTRL+P) before a rebuild, all my functions work instantly, but if I stop the project and the just Run it again (F5), everything exponentially slows down. Why is that?

 

[Erel]

Are you sure that you aren't making any modification to the code?