wifi ap with debian and Adafruit usb dongle

I’m trying to configure a BBB as AP with an Adafruit miniature usb dongle. After some efforts I succeed, but I get a strange behaviour pinging the BBB. Values range are from 5ms to 2500ms even if I’m close to the board.

you can try

  1. turn off hdmi
  2. switch another dongle
  3. switch channel