hi there, and welcome
those areas are occasionally reportet as a bit crash-happy, but this...
your game and launcher are on the latest patch?
try deactivating the ENB and activate ENBoost instead (is both at the same time possible? I have no experience with ENBs),
see if that changes anything (probably not :/ )
also, please attach a manual save (no quick- or autosave) - found in
Documents\My Games\Skyrim\Saves - we need two files, the *.ess and the *.skse;
pack them as a rar-, or zipfile or something