There's variability even using the same bean and the same settings on your cooker because venting can vary, I think based on humidity. I've had my cooker vent i

There's variability even using the same bean and the same settings on your cooker because venting can vary, I think based on humidity. I've had my cooker vent in 15 minutes, or 60 - it's still cooking while it vents. So you have to be aware of that when you start the cook. If you've got a broth going on the stove at the same time, the beans will vent more slowly