Cognitive ability doesn’t translate to immediate R&D, you could think up a trillion ways to do something, each better than the last, but you still have to build the equipment that does the thing you want to do research on etc. for every iteration of your idea.

That doesn’t mean that it won’t be quick, but that these things aren’t magic - as you seem to be suggesting immense intellect would be.

Eventually you get to the point where Isaac Asimov’s “any sufficiently advanced technology is indistinguishable from magic” holds true, but that doesn’t happen over night.