As someone who’s used VorpX for 4 years: Use Z3D (as thats more likely to be supported than G3D right away) and crank the 3D setting to 3. It gives the best depth, very close to G3D.
And Z3D is very fast, no need to worry about performance.
It’ll run fine in Z3D, you just can’t crank the graphics too high. The recommended specs for the game aren’t actually that bad, and Z3D doesn’t subtract much from the fps. Also, its almost a certainty Ralf will release it as Z3D at first just to get it out and playable by everyone who doesn’t have a GtX4090 from the year 2023.
If you will deactivate Raytracing complete, but though activate DLSS Performance Mode, you will have enough Performance with a RTX 3090 and Ryzen 5000. The Problem is that CP77 is DX12 only, and vorpx does not support G3D in DX12. What’s more is that DLSS breaks G3D also DX11, and there is also no quick fix.