Android emulator is very famous for its performance. It’s very, very, very notoriously… slow. If you debug your app with Android emulator, it get more extremely slower. This performance problem stems from the fact that Android OS is written for ARM processor (not for Intel/AMD processor or let’s say not for computer processor). Therefore when we get our apps run on Android emulator (which is running on Intel/AMD processor), every assembly code row has to be emulated. A run-time binary translation will happen to translate every assembly code of development machine to device machine. And that point slows down everything.