Is the conscious mind the bottleneck of the brain?

Recent research into the subconscious mind and the flow state, which operates from a temporary shutting down of the conscious mind, has proven that subconscious processing is multiple times faster and efficient than conscious processing. Does this mean that conscious thought, the primary separator between humans and primates, is actually a bottleneck to optimal thinking and mental processing? JC and B-Mic Roc OD.