Where to find these settings?
The Extras->Calibration screen in the OpenGD77 CPS
I tried playing with the calibration setting along with low power settings on my hotspots that support it, and I still had the audio defect. There are also times when the audio and S-meter drop for a fraction of a second. But the main bug is a digital repeat effect that lasts about a second. And it still happened with the latest firmware version tested today. It always sends me back to the Tier I firmware.