Dark Shikari's blog was great. Defunct now, but I think it's all on the Internet Archive. https://web.archive.org/web/20100104193513/http://x264dev.multimedia.c

Dark Shikari's blog was great. Defunct now, but I think it's all on the Internet Archive. https://web.archive.org/web/20100104193513/http://x264dev.multimedia.cx/?p=201 https://web.archive.org/web/20100104193513/http://x264dev.mu... I don't know of any benchmarks, but rav1e does have --tune psychovisual, and there are issues raised against it, so it seems they take it seriously.