Unfortunately, that Suspiria BD is the UK version, which has heavily blown out contrast though, by all accounts, good to excellent audio (a remix coming close to matching the LD). I may want to mention tha both the Japaneese and French BDs don't have remarkable audio (mono for the French!).
Here's a comparison of all the different BDs:https://sites.google.com/site/suspiria1977bluraycomparison/
(Kudos and Credits to whoever actually made it).