Short answer NO
A lot of engineering goes into making sure the timing of a semiauto's slide cycling is correct. The weight/mass of the barrel and slide, angle on the slide lug cutout, tension of the spring, energy of the cartridge etc all go into consideration.
Reducing the spring tension could lead to the slide unlocking early, casing a case rupture.
Bottom line is if the spring is too stiff Smith makes their EZ line