MALUS gives you

Day.of.the.Dead.1985.PROPER.2160p.UHD.BluRay.H265-MALUS

Video (Untouched) : 84.5 Mb/s
Audio             : English Dolby TrueHD/Atmos 7.1 @ 3073 kbit
                  : English Dolby Digital 2.0 @ 192 kbit, Commentary 1
                  : English Dolby Digital 2.0 @ 192 kbit, Commentary 2
Subtitles         : English SDH

Movie Size        : 64061 MB
Movie Length      : 1h 40m

IMDB Link         : https://www.imdb.com/title/tt0088993

Format            : Dolby Vision, Version 1.0, Profile 7.6, dvhe.07.06,
                    BL+EL+RPU, Blu-ray compatible / SMPTE ST 2086,
                    Version HDR10, HDR10 compatible

Notes:

Proper reason.

The audio is just a big mess with sound effects missing all over the place.

We have compared with several previous releases, and of course this Shout
disc. They all have the audio effects that Cinestrange Extreme does not.

Some examples.

10m 52s: People walking and throwing bags without any sounds being made.

17m 22s: Throwing something against the wall, but it doesn't make a sound.

17m 57s: Getting slapped in the face twice, the first time without any sound
         at all.

30m 35s: Gun being cocked without any sound.

There are also scenes of the chopper flying, where pretty much no sound
is heard. On other releases there is clear sound.

And there are probably many other examples.

Besides that the Cinestrange Extreme video is full of white dots all over
the place. Probably because this is not an actual scan of original material,
but an upscale of something that hasn't been cleaned up.

Some may call this a qualitative proper. Do we care. Not really.

Such a messed up audio track simply has to be a technical flaw.

This is not the fault of the group who did the release, but solely the fault
of Cinestrange Extreme for releasing a crap disc just to beat Shout and
Second Sight, who may also be working on a release.

Oh, and the Shout disc also has Dolby/Atmos and Dolby Vision (which by itself
is not a reason for a proper).