SMB share deadlocks since High Sierra
Got a workaround that worked in our organization.
This changes for macOS the SMB behavior to v2.
Changed the following setting in the /etc/nsmb.con file.

#!/bin/sh

echo "[default]" &gt;&gt; /etc/nsmb.conf
echo "protocol_vers_map=2" &gt;&gt; /etc/nsmb.conf

exit 0