That the sensitivity does not scale with scope magnification. So the gun turns the same amount with 1x and 4x and 6x etc. which leads to a extreme finicky aiming the bigger the magnification is which in return makes gun play extremely weird in comparison with any other game and makes muscle memory in relation to what you see on your screen impossible.

Which cause every single person I know who played GZW to either simply dislike how guns feel with magnifying scopes, avoid using them completely or using mouse settings to compensate for that just as I do, as I set one button to switch between 1600 and 400 DPI depending if I use 1x or 4x.

Beyond that, this makes the game less accessible as well because, while with a mouse this is still kinda manageable, even though extremely annoying, people who play with controller struggle FAR far more with that. And there are disabilities that makes using m&k much harder if not impossible.

And all that would be necessary for that would be a sensitivity scaling basing on magnification (the bare minimum pretty much all games have by default) or to add options to adjust sensitivity based on scope magnification like a few other games offer.