Hi Jaycmeza! Can you open the System Report for your video card and see if it reports as Metal compatible? To do this click the Apple logo in the upper right, and then 'About this Mac'. Then click on 'System Report'. On the left column, click on 'Graphics/Displays'. Can you post a screenshot of this page? For an example of what it should look like, here is mine with my GTX 960.
While I haven't tried to install Mojave yet, I'd imagine it won't work without the latest Nvidia web drivers. It took them around 3-4 months to come out with the High Sierra ones, I'd imagine the same will be true with Mojave.
EDIT:updated picture
QUOTE='Cj1932'QUOTE='Spike1988'I have the MSI 560Ti Twin Frozr II 1GB. I've overclocked the core clock to 1000MHz with the core voltage at 1.087v. The package provides the installation files for NVIDIA GeForce GTX 560 Graphics Driver version 1.3.34.14. If the driver is already installed on your system, updating (overwrite-installing) may fix.
Gtx 560 Driver For Mac Catalina
Hope it helps!
Gtx 560 Drivers Windows 10
-Geotrax