No software tool will change fundamental brain chemistry. There is a limit to how fast humans can learn, because learning and thinking is a physical process that involves the actual movement of atoms and building of biological cells. There's potentially huge, not well understood benefits to effort, toil and failure in long term knowledge acquisition and design.
There's potential catastrophes around superpowering one part of our abilities and not others, a bit like early attempts to eliminate sleep. I think
@ibdknox has written before about the benefits of pointless busywork in coding (manually balancing brackets, manual renames of variables etc). Sometimes confronting a problem in it's purest conceptual form is just too big chunks to chew.
So I would guess the "traffic jam" feels like those times when you actually have loads of time on your hands but you don't seem to be able to start anything because there's no little problems.
I linked this Ted Chiang story before which highlights some of the arguably negative effects of the previous literacy revolution -
http://web.archive.org/web/20131204053806/http://subterraneanpress.com/magazine/fall_2013/the_truth_of_fact_the_truth_of_feeling_by_ted_chiang