This page shows the presets too,
https://x265.readthedocs.io/en/master/presets.html
"psy-rd=0.35::psy-rdoq=14.65"?
I'd rather have high psy-rd value, because it is more accurate than psy-rdoq.
Quote:
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High levels of psy-rdoq can double the bitrate which can have a drastic effect on rate control, forcing higher overall QP, and can cause ringing artifacts. psy-rdoq is less accurate than psy-rd, it is biasing towards energy in general while psy-rd biases towards the energy of the source image.
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https://x265.readthedocs.io/en/maste...visual-options