More likely, the developer can handle the tech pressure, but having his/her manager FREAKING OUT and over his shoulder asking questions the whole time is what really causes the slowdown.
That often means you need managers who are especially good at (or at least dedicated to) deflecting the freak out/crazy.
CD won't increase your changed related incidents, but to paraphrase the IBM parable, "no one ever got fired, for doing quarterly releases, and heavy QA."