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I think string jumping has way more to do with the animal than the bow. If the animal is standing alert and looking/listening in your direction, he is probably going to drop the instant you touch the trigger. As some have said, you might still hit them, but the chances of a bad hit or miss are much greater.

I have hunted many times with little or no silencing equipment on my bow and if the animal is relaxed, they don't move before the arrow gets there.

I let the animal determine how I aim also. If a deer catches movement or hears me draw and goes on alert. I aim at the lower 1/3 and wait for the head bob to release. If deer is still relaxed when I reach full draw, I aim dead center.
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AMEN Stickemup!!! Exactly!
A deer definitely has the ability to jump the string, no matter how fast your bow is. Does that mean you will miss? Not neccesarily. Take all the factors into consideration, before taking your shot. Good judgement will usually lead to a good shot and clean kill. And yes, a quiet bow always helps lessen the chance of it happening.