Hat etwas geholfen:
user$ sudo -s
user$ vi /etc/smb.conf
[default]
streams=no
soft=yes
notify_off=yes
streams=no
soft=yes
notify_off=yes
user$ vi /etc/nsmb.conf
[default]
streams=no
soft=yes
notify_off=yes
streams=no
soft=yes
notify_off=yes
user$ vi /etc/sysctl.conf
net.inet.tcp.delayed_ack=0
net.inet.tcp.mssdflt=1460
net.inet.tcp.sendspace=65535
net.inet.tcp.recvspace=65535
net.inet.tcp.newreno=1
net.inet.tcp.mssdflt=1460
net.inet.tcp.sendspace=65535
net.inet.tcp.recvspace=65535
net.inet.tcp.newreno=1
user$ reboot