I don't know the method you used to measure this, but I used a single replay to check what you just explained, and it took more than 15 frames to dq.

and you missing the point, i want to avoid an instant dq, not know why it happened.

From what i been told there's two joints that'll do insta dq if it touches the ground simultaneously, i don't know if this a belief or a fact, but there was a couple of times that i barely touched the ground and it insta disqualified, there wasn't any timeout.