You left out some details, so I'm going to assume you hit this shot with full spin. Even if you didn't my point still holds.
195yd shot with full spin isn't going to go 195 yards, pretty much ever. Club yardages are averages, but ball trajectory and spin rate will affect those averages quite a bit. You hit 190, so you took a little off, meaning the trajectory is not quite as high as it would be, meaning the carry isn't quite what it would be. Then you hit the ground at 180 into an uphill and voila, 180 yard 5-iron.
With my setup, when I hit a full-spin 195yd 5-iron I'm expecting it to go 187-188 yards (in no wind), with the understanding that a poorly timed deviation could leave me at 183-184 or 191-192. This is why you pay for precision and forgiveness; these attempt to minimize what a deviation can do to you.
The problem with many players is they refuse to accept these parameters for what they are. They continually beat their head against the wall, expecting 195 to always go 195 regardless of course conditions. Players blame the programmers because that's easier than accepting that they may not be taking everything under consideration. Players should be making notes of these key differences and adjusting appropriately. When you take this all into account, and play the game how it wants to be played, you find that it is actually quite consistent. Then the only true variable is deviation.
People don't think about the fact that a 5-mph tailwind still means you're hitting INTO the wind. The ball travels faster than 5mph. You're not going to get quite the same lift when you hit downwind, because the wind isn't pushing up on the ball up as much as it normally would. Lower trajectory = less carry. Then what if you mishit the ball? That throws another variable into the calculations. You generally lose yardage when you mishit (though not always).
I would've hit your shot with full backspin 195, expecting 187 + 2 feet down. Sounds about right, maybe a touch short. Hard to say for sure without knowing the hole/pin at which you were shooting and topography around the pin.
That's why you don't see the top players complaining about this. They've learned to accept what the game is giving them (instead of complaining about what it is not) and do their best to work around it. They accept the environmental constraints for what they are and they make the necessary adjustments.
If suddenly my 5-iron goes 250 yards (as an intended change), then I'm not going to complain about it. I'm gonna go figure out what happens if I take off 5%, 10% ( I try never to do more than 10%). What happens if I hit no spin, half spin, 3 clicks off full spin, half top spin? Spin can be used to fine-tune club yardages. Each click means something (click = the absolute minimum distance you can move the dot).
Now how much do those all different shots and spin settings affect the ball's trajectory, carry distance and what does that do to the roll when it lands? Where is the ball likely to land based on that? How will the wind affect it? 250 yard 5-irons aren't the norm of course, but if that's the environment I'm given to play within then I will adjust. I'm willing to accept that it is what it is.
I remember many years ago (back when we only had 2 club sets and one course to play) when people would complain that the 7-iron was broken. 150yd full spin 7-iron goes 138-ish. It was never broken. It was just trajectory and spin (and poor clubs). It looks like nowadays the "broken" club in my set is the 6-iron, because it typically only goes 171-172 (rated at 180) with full spin. It's not broken, that just happens to be the edge of where spin starts winning the battle against forward motion. That's crude, but apt.
You basically have two options here; complain or adjust. Those willing to make the adjustments will ultimately find some degree of success here.
Get out there in practice mode, chart your shots with different spins (BP #10, KIA #1 both very flat) or at least take notice of what happens when you don't hit a full shot, don't use spin, or some combination of adjustments therein. I recommend never taking off more than 10% on "full" type shots (meaning not punch, pitch, chip etc). The meter is not linear, so taking off more than 10% can start to make for a difficult shot as the margin for error increases. If you find yourself taking off more than 10%, trying making minute spin adjustments or use a different club altogether.
There's also the fact that some pins (not holes/greens) simply play short or long. Another representation of real golf. "Yeah it says 207 on the sign, but it plays 215 at least." You hear this on the course all the time. CCC #12 plays long to the right pin. BP #16 plays long to the left pin, but spot on or maybe a tad short for the right pin.
I promise you will hit better shots and get better results if you are willing to take everything into account. Just keep in mind, sometimes you're going to do everything right and still get a random deviation. Sometimes you do things wrong and the deviation somehow puts you back online. That happens to all of us. As I said earlier, deviation is the only true variable and that's just the nature of this game.
Good luck.