NVIDIA has stated that they will no longer support 3D Vision in GeForce Game Ready drivers after the upcoming April 2019 Release 418 driver. The release of 3DTV Play, which allows 3D gaming on 3D TVs, is now included for free in the driver. NVIDIA will continue to address critical driver issues in Release 418 through April 2020. The 3DVision Video Player will still be available as a download through the end of 2019. For users who wish to continue using 3D vision, you will need to stay on the Release 418.
Source: https://www.bleepingcomputer.com/news/hardware/nvidia-removing-support-for-3d-vision-in-game-ready-drivers/