Time youself with this scenario...
Hold a bag of groceries in your weak hand (a couple rolls of tissue or the like will work fine). In your strong hand hold your keys as if you are unlocking you car door or house door. When the buzzer goes off do your draw (DRY PRACTICE!!!!!).
This is a likely scenario in the real world. I bet your reaction time, draw time, and fire time are considerably slower than you're seeing above.
This real world scenario draw will give you a better idea of what it will take when you actually need to defend yourself and will show you that awareness is VERY important as an aspect of a "quick draw"!
Clinging to my God
and my guns!
Then said he unto them, But now, he that hath a purse, let him take it, and likewise his scrip: and he that hath no sword, let him sell his garment, and buy one.