I have had a couple times since the update where my charging has reacted to apparent fluctuations in power, but here is where it is a problem. It does not reduce the draw 25% from where you set it, but 25% from maximum. My garage is only equipped with a 30A breaker. The total to the garage is only 50A and I don't want to have to pull a new feed from the house. Because of this at home I charge at 24A. When the car detects whatever it is looking for it actually ups my setting to 30A instead of reducing it 25% to 18A.