The programming language, dubbed DuckyScript, is a simple instruction-based interface to creating a customized payload. However, it runs independently from the microcontroller that installs the drivers to the machine. On some older models running Windows XP, the device took upwards of 60 seconds to install the drivers. On newer machines running Windows 7, it took anywhere from 10-30. And if the drivers take longer to install than the delay you put at the beginning of your payload, it will begin firing off anyways.
Source: https://thehacktoday.com/60-best-rubber-ducky-usb-payloads/
