It looks like Nvidia does not even work on Mojave driver. Apple says it's up to Nvidia to release drivers.Sorry, I know this is for High Sierra graphics, so can we infer that since Mojave came out Oct 4th 2018 that High Sierra is likely the last NVidia supported macOS? It's been a long time (8 months), and unless I missed the release of NVidia graphics for Mojave, this seems like the end of the line...
With Security update 2019-002 it was 17G6030... but as far as I know today came 17G7024 which is currently the lastest.The latest High Sierra version is 17G6030. The drivers for 17G7024 were already released.
Works great for me !! Thxcopied from another site:
I updated it to the latest High Sierra build, 10.13.6 (17G7024), like a total dummy without reading anything about it.
1. Uninstall existing nVidia drivers through the nVidia Driver Manager. This will force a reboot.
2. After rebooting, I ran nVidia-Update, https://github.com/Benjamin-Dobell/nvidia-update
-This went out and determined that 322.214.171.124.40.127 was the best version. It downloaded it, patched it, and installed it.
3. I rebooted one last time, and it works perfectly again.
Hope this helps someone out there as it had me scared I was going to have to format and re-install.