Are you using an Ortek config file that has the VOLUME and MUTE buttons enabled?there is a problem with mute whereby it requires multiple presses to both mute and unmute.
Yes, your Centarea HID.xml but without AutoHotkey running (non-admin account).Are you using an Ortek config file that has the VOLUME and MUTE buttons enabled?
What is the behaviour like if you disable the Ortek VOLUME and MUTE buttons in the Ortek config file?