The renders in the first couple of scenes were made with an i3 CPU, cuz my low-end GTX 760 at the time wasn't even close to being capable of rendering them.
The later scenes (in Chapter 2) are more Hi-Res with no noise, as I've since upgraded my graphics card to an RTX3060. It's a mid-end card, but it's the best I can afford.
Once the game is completed I'll consider remastering Chapter 1 renders.
If you would like to see more high-definition images, consider supporting the game.