My mount is mainly using all defaults minus the dir-cache-time:
felix 778 1 1 Jul11 ? 00:30:19 /usr/bin/rclone mount gcrypt: /GD --allow-other --buffer-size 1G --dir-cache-time 96h --log-level INFO --log-file /opt/rclone/logs/rclone.log --timeout 1h --umask 002 --rc