I see, so 0.25 rays per pixel is soo bad, it's better to use CPU for it.
Uh, what? COMPATIBLE? Why, on planet earth, would a gamer care what is compatible with some proprietary crap out there?
You didn't it, so let me explain it to you:
1) "UU4 supports it" doesn't mean what you think it means. UE4 merely ALLOWS you to use PROPRIETARY extensions that would run on a fraction of the gamer PCs.
2) Epic has dumped RT in Huang's face. (sure they say they support it, as it's the most overhyped tech of the decade). Lumen not using any of it and even not being compatible shows what company behind major game engine thinks about this tech.
3) You don't need any of that hardware RT to get great effects. Oh, and without that wonderful hardware RT you might also end up with MUCH higher frames per seconds and no need to downscale to 1440p or lower, but call it "4k DLSS" too. We had those effects for decades, and on much slower GPUs, GoW 2018 is one of the excellent examples of it (on top of UE5 demo).
4) "Can't I use my advanced imagination to make facts" - nope, sorry, you can't.