While the draw distance increase in CyubeVR is very noticeable and great to have, in Spiderman 2, even up close I can hardly tell the difference between performance pro and fidelity pro mode. It's supposed to vastly ramp up RT effects, but most of what I see is a terrible drop in fps with drops well below 30 fps when turning the camera.
You can set effects lower and VRR would certainly help (and recommended) for fidelity mode. This is comparison with everything on max.
Performance Pro mode first, Fidelity Pro (more RT) next.
I can see the difference in the first pictures when switching back and forth, the reflections are sharper / higher detail. Yet in motion the severe drop in frame rate negates it all.
Performance Pro
Fidelity Pro
Performance Pro mode runs flawlessly and looks amazing. The extra sharpness in RT reflections adds too little to kill the frame rate for.