Appium 1.6 - What is the iproxy process using for?

Support
1
  1. Is it make performance slower?
    2, Can i run Appium and disable it?
  2. In a case of multiple real devices (Not parallel - E2E tests), In a case of new session,
    I kill the process using bash command, is there any programmatically way to stop the process?
    (AppiumDriverLocalService doesn’t kill the process which make new session unavailable)
    Thanks,
    Eitan.