Frustrated NVIDIA card users simply had enough and decided to do something with Apple constantly screwing things over with NVIDIA stuff. They wrote a petition demanding apple to stop blocking NVIDIA developers from accessing macOS Mojave source code.
Here's statement from NVIDIA developer:
Developers using Macs with NVIDIA graphics cards are reporting that after upgrading from 10.13 to 10.14 (Mojave) they are experiencing rendering regressions and slow performance. Apple fully controls drivers for Mac OS. Unfortunately, NVIDIA currently cannot release a driver unless it is approved by Apple. Our hardware works on OS 10.13 which supports up to (and including) Pascal
Whole situation proves that Apple has issues with NVIDIA for a long time. If you feel that's wrong, sign a petition and remember to share it with your friends.
