I'd have a problem with the cases coming straight back at me. That could be distracting if you ever need to use the pistol in a self defense situation. My 3913 dribbles the cases out of the ejection port and they land on my right a foot or two away. With that, I have no problem.
Try 124gr ammo and see what happens. If the empties continue to come straight back at you, contact S&W customer service. The ejector/extractor will need tuning.
As an afterthought, you did clean and lube the pistol as shown in the manufacturers handbook when you received it didn't you? Running it dry or with the original anti corrosion grease that was applied at manufacture may cause the problems you have.
My immediate family owns three M&P9C 1.0 pistols and none of them have ever had the problem the OP is having, so the shorter springs have nothing to do with it. The original 9C 1.0 has a shorter barrel and spring than does the newer 9C 2.0.