There also are no scene rules for AV1, only for H265 [1]
With the SVT-AV1 encoder you can achieve better quality in less time versus the x265 encoder. You just have to use the right presets. See the encoding results section:
https://www.spiedigitallibrary.org/conference-proceedings-of...
This problem is only just now starting to get solved in SVT-AV1 with the addition of community-created psychovisual optimizations... features that x264 had over 15 years ago!
https://wiki.x266.mov/docs/encoders/SVT-AV1
https://jaded-encoding-thaumaturgy.github.io/JET-guide/maste...