I suspect its more an Apple issue than an NVidia one. Indeed, I am beginning to wonder if Apple are deliberately sabotaging machines with NVidia cards in them. There is no proper NVidia support in 10.14 at all! And security updates that crash graphics drivers? Come on!
My mac was bought for me by my son as a present for helping him out a while back, but frankly its put me right off both Apple hardware and software. It seems to be a triumph of style over content. The monitor is superb, but the computer itself is decidedly sub-standard, and the operating system even worse than Windows!
Luckily my main computer runs Linux, so I’m moderately at home poking around Unix systems, but I was always told that the whole point of MacOS was that you didn’t need to poke around to get it working properly. That simply isn’t true! And it seems to be getting worse.
My biggest problem is how to tell my son that this expensive present he bought me is actually a pile of ****!