Cyberpunk is a bad choice for your argument here, do a slight bit of research and you will find that CP2077 was only flagged and checking for AVX, not really using it, and thats why it was easy to mod out. Starfield by comparison is actually using AVX instructions. To quote a modder already looking at a possible starfield patch: AVX is useful in cases where heavy use of vectors and floating point is required, some preliminary findings seem to indicate its being used in starfield for lighting and possibly physics, 2 areas that are heavy in FP use. As for why AVX is only just now starting to be used in video games, simple it takes time to build a user base that can use new technology. 64 bit took years to become a requirement for games or software in general, despite it being generally available since 2005, it took MS until 2020 to stop selling 32 bit copies of windows. Its the same reason we dont see alot of games using ray tracing yet, because they technology is still pretty new and most of the games that incorporate it are partnerships with nvidia to push new GPU sales.