Are you sure it's stalling…
Are you sure it's stalling out. If this only happens when you come to a stop and have your foot on the brake..... try lifting some pressure off of the brake pedal, your car should start back up without having to put it in park and restarting the car..... when the car "stalls out"
I'm thinking this is the auto off feature. The car will start back up if you release the pressure on your brake pedal.