I did some experimenting this AM
mine is set on quick release. There is a 2 second delay before the brakes release, but they also release as soon as you touch the gas.
I am still thinking if it is stalling it is because of lack of gas/releasing clutch too early. It does not really take any revs to make it release early just a touch on the gas pedal. I assume it looks for go pedal voltage and that triggers release.
That's how hill assist works on every vehicle manufacturer. I had it on my VA WRX and it was nice, especially when you're driving with dipshits behind you that are 1/2inch off your bumper. I've never heard of the car stalling due to this. Sounds like user error .. I've never even heard of something being wrong with hill assist to cause what he claims.