Please stop spreading misinformation. The engine is updated - it now renders the scene faster and/or with higher fidelity. The engine has been optimised so that it utilises better the strengths of each cpu architecture.
By the way in R20 the 10700K was only 2% faster than the 3700X. In R23 it is 10% faster. So either Intel cpus had more untapped potential than AMD ones and this potential (with AVX perhaps) is now being tapped or the engine has been optimised further for Intel cpus but not so much for AMD ones. Either way Intel now wins by 10% against Zen 2 and loses by about 10% against Zen 3.