Definitley appreciate that you encode it for me, if you didn´t started yet crf 20 is fine, no need for crf 18.
CMMP, I have a 4K encode almost finished going at crf20. Also I realized that Staxrip (the program I’m using to encode) does not automatically apply a de-banding filter to smooth out unnatural gradients (different than deblocking)-- Handbrake, a different program but without true 10 bit end to end, seems to always have de-banding on by default. So in addition to the better crf of 20 now there is proper de-banding, and the picture is noticeably better (perhaps even close to perceptually lossless in most scenes now). Final filesize is estimated at just over 12GB and should be ready later today.