This was posted on BD forum in regards to the Fog by tweety72 and some others said they got same reply
Supposedly a reply from StudioCanal as to if it was a 100% official reply I don't know for sure if it's reliable
I received an e-mail today from Studio Canal about the "flickering" and the drop outs in various scenes. Picture quality is awful...they must be blind!
Thanks for your email.
We wanted to let you know that we have now completed a thorough investigation into the issue you have addressed. Five quality assurance testers at Testronics have carried out a fast track investigation for us, using a test matrix of UHD players, with a combined UK market share of more than 97%. They tested the disc at multiple stages within the disc production workflow and exceeded standard studio testing approaches. Testing included SDR, HDR 10 and Dolby Vision passes. The playback quality was concluded to be of an acceptable level and consistent with similar projects. Overall, they were unable to recreate the playback issues despite testing on over 60 player and screen combinations. All indications are that the issues are likely to be caused by incorrect setup or anomalous device compatibility issues.
Therefore, to help us conclude why you have been experiencing problems, would you please be able to provide more information on what setup you are using?