Break at the knees and hips simultaneously. Right now you're doing hips then knees. The lighting makes it a little hard to see the depth but it looks fine to me. I have a similar problem of breaking at the hips first although this caused my knees to shoot way forward at the bottom which ended up causing some hip flexor tendonitis. I've been fixing this by using TUBOW. May be worth a shot for you if you can't consciously fix the motor pattern.