I was not, just played using shift and it made a heck of a lot of difference! though I feel like i would just be constantly holding shift if i were to play again. perhaps have the run by default and then make shift put you into a walk mode in case you want more precise movement?
That's the impression I'm getting. If it's required that you're sprinting constantly, why is it a button at all? We did originally have more of a downside to sprinting across puddles but that didn't gel when the game's pace increased.