Unable to enable GPU rendering Substance Stager 3.0.2

Ditto. Exact same problem with the same graphics card, Win version and Stager version.

Wasnt happening in previous versions.

Frustrating when clients are on your back.

Tried all sorts of settings tweak combinations.
Anyone found a solution?

You may know this already, but be sure that you're not using the Game-Ready driver. NVIDIA only tests the Studio drivers against graphic and 3D applications, and I've seen a number of problems cleared up by replacing a Game-Ready driver with the same version number Studio driver. 

Hello, I have the same problem: ‘Unable to start the rendering engine’ on an RTX 4070 TI and Windows 10. I’ve updated the NVIDIA drivers and tried various solutions suggested on the Adobe forums for Stager… (Stager 3.0.2)

Having the exact same problem with the same graphics card but running Windows 10. Help desk was unable to resolve the issue so far. If you roll back to the previous installation that worked for us.