This is achievable with Bob's mods Power Armor MK5 and 26 Exoskeletons MK3.
When running diagonally it only takes ~12.4x speed (19 Exoskeletons MK3) and has an additional effect: some chunks along your path end up never being revealed: On screenshot the middle section where I added more speed (19.6x) has more jagged edges
screenshot
There was a section about this on wiki until 6th of June 2018 (when it was updated w.r.t. 0.16 release) but it was removed for some reason although it mentioned "lower end machines" which doesn't seem to be the problem as map generator never seems to take more than 5ms and generally stays at ~1ms per update.