Not really true. Gyros in Quad is rate gyro and not HL type.
The idea was to connect between receiver and FC only on one line.
It should result in a more steady heading unless it will go completelly mad. I have seen HL is being used on camera rig for steady shot. But for FPV I see the benefit...
Have anyone tried this on a Quad?
I have one spare and was considering worth trying. Just for fun.
But before creating potential disaster I would like to hear if anyone already tried?