Psy-rdoq Info

Because the algorithm is fighting to preserve detail, it may demand more bits for complex frames than standard RDO would allow. This can lead to slightly larger file sizes or bitrate spikes if the rate control is not carefully configured.

Using PSY-RDOQ is a balancing act. If the value is too high, you might introduce "ringing" artifacts or "mosquito noise." According to expert encoding guides for x265 , the ideal value depends heavily on your content: psy-rdoq