Hmpf. Problem is back. :(
Luckily the ShuttlePC has 2 Ethernetports. I simply shared the 2nd one, installed a dhcp server and now all my clients are routed through this machine. Speedproblem gone. Don´t know whats the Problem with the FritzBox. Perhaps a bad Firmware or something.
Yes. I have Hackintoshs here. But the Drops where with Windows too. Its was not a macOS problem.
SMB and Apple is a separate story. Did you try this?
sudo -s
echo "[default]" >> /etc/nsmb.conf
echo "signing_required=no" >> /etc/nsmb.conf
exit
I think I found the problem. My FritzBox. I set it back to factory defaults and now I don´t have any drops (at least at the moment). But why iperf was working ok?
My system:
Ubuntu 20.04.3 LTS 64Bit
Kernel 5.11.0-38-generic
Intel(R) Core(TM) i3-7100 CPU @ 3.90GHz
16GB Ram
Network Intel Corporation I211 Gigabit Network Connection
I've had the problem for a while that the SMB performance just randomly drops (strangely enough as if suddenly there was only a...