Just writing to inquire if the GRASS GIS Windows Binary Stand-Alone Builds are using the –with-openmp >Build Configuration flag to enable multithreading across all applicable modules.
see
https://github.com/OSGeo/grass/blob/main/mswindows/osgeo4w/package.sh#L154
and
https://github.com/OSGeo/grass/blob/main/mswindows/osgeo4w/package.sh#L189
for the configuration of the winGRASS builds.
kind regards
Helmut
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osgeo | www.osgeo.org/member/kudrnovsky/