problem reading large fortran unformatted files with ifort 16-17

Hello,

I recently encountered some issues reading large binary 'unformatted' Fortran files (around 30Gb) with both ifort 16 and 17.
With those versions, the reading always stops at approximately 10% of the file with
"forrtl: severe (67): input statement requires too much data, unit -129"

However with both ifort 15 or gfortran, the file is read flawlessly. I also don't have any issue with Ifort 16 and 17 for smaller files
(around 20Gb). I suspect something might have changed in the software environment/default options but I can't find it.

Best,

Thomas