5 vnext + nginxIn BlueStacks version 0.9.24, after you close emulator from a tray menu it will stay in a system as a background process. It might slow down your host system.

To properly close BlueStacks you need to run c:\Program Files (x86)\BlueStacks\HD-Quit.exe 

To speed up this process, create a shortcut on desktop and use it to close your BlueStacks instance.