Optimization is almost ready and I'm planning to release the test version soon as possible.
Currently there isn't any setting for lower quality and this is the result I get on test computer:
GPU: RTX 4050 (laptop) = RTX 3060 for desktop
Game settings: Highest Quality with 100% resolution scaling at 1080p (low quality mirrors for better comparison)
New lighting settings: Highest Quality
Result: 130-140 fps
Rendering a frame takes 7 ms on average (everything included, game base rendering + new lighting + TAA).
New lighting with new AO + Reflections takes 2 ms (average) to render. Everything depends on the scene.