So, quick comparaison between TLJ:L and the bluray version: indeed the red throne room is already a little bit noisy (the red background especially), which is a little bit emphasizes in the TLJ:L version (it was already the case with TFA:R with Snoke’s very dark scenes). As for the crushed black, my bad I guess, since I’ve checked on my tv and there is nothing wrong with them (which means at some point I’ll just need to go back to my parents home to make a complete set up of their tv config, the unbalanced quality I’ve seen might be quite related to that). And since I was the only one to see these issues, the (bad) tv config is the best assumption. Thanks for your reply !