…even the 32gb encode has quite apparent compression artifacting. Have you considered a H265 ~40gb version? That’d be a bit of a pain to encode but would hopefully be close to lossless. I’m currently waiting for the 100gb version to trickle down from GDrive but I imagine that’s a little large for most people.
Can you elaborate on which scenes you noticed the artifacts? 32gb should have been sufficient for the 1080p release so I’m wondering if it’s the encoder (NLE’s are not very good with H264 and H265) and also if the artifacts are specific to scenes with VFX work.
EDIT: I watched Ascendant in a VR IMAX theatre so artifacts were not as readily visible to me.