Fast travel consume several seconds for using pipboy.
I made another test run. Now 37.39 at the "endgame" (checked by quicksave there) and 32.42 at hoover dam autosave. Route is actually the same as in my previous run, just some improvements here and there. And I haven't done the final ultimate shortcut (flying over the wall). Actually, you can fly over the wall or you can fly over some place on the left - in first case you'll face some legion guards, in second it seems too hard to perform flying due to non-flat surface.
And question to everyone - is it possible to skip observation of upgraded securitrons? I guess it ain't, but who knows.
And question to everyone - is it possible to skip observation of upgraded securitrons? I guess it ain't, but who knows.