Have you ever found yourself going prone to avoid a fight, but the slower movement speed cost time in your run? With this method, sneaking can be done a lot faster.
Instead of going prone once to sneak, spam the dive button so you get in a dive loop.
If done perfectly, the Automatons will not detect you at all, however any small interruptions in your dive loop can cause them to enter the pre-alert searching state.
They will not be able to detect you if you keep spamming dive unless they get very close to you to the point they can detect you while prone.