Vero4k+ network speed much to low [solved]

I have tested the network speed at work, still not 1GBit and a lot retrys

Connecting to host 192.168.0.50, port 5201
[  4] local 192.168.0.215 port 60496 connected to 192.168.0.50 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-10.00  sec   795 MBytes   667 Mbits/sec  127             sender
[  4]   0.00-10.00  sec   795 MBytes   667 Mbits/sec                  receiver

-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.0.50, port 49517
[  5] local 192.168.0.215 port 5201 connected to 192.168.0.50 port 49518
[ ID] Interval           Transfer     Bandwidth
[  5]   0.00-10.19  sec  0.00 Bytes  0.00 bits/sec                  sender
[  5]   0.00-10.19  sec   679 MBytes   559 Mbits/sec                  receiver

back at home i connected only the windows server and the vero to an old Fritzbox 7390 and finaly got the advertised speed. Now i have to debug my network setup.
As it is not a hardware or software problem i have marked the thread as solved. I will ignore the

Cannot get wake-on-lan settings: Operation not permitted

ethtool messeage for now. Thank you all for your help.

Connecting to host 192.168.178.22, port 5201
[  4] local 192.168.178.20 port 34017 connected to 192.168.178.22 port 5201
[  4]   0.00-10.01  sec  1.09 GBytes   937 Mbits/sec    0             sender
[  4]   0.00-10.01  sec  1.09 GBytes   936 Mbits/sec                  receiver

-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.178.22, port 1430
[  5] local 192.168.178.20 port 5201 connected to 192.168.178.22 port 1431
[  5]   0.00-10.18  sec  0.00 Bytes  0.00 bits/sec                  sender
[  5]   0.00-10.18  sec  1.09 GBytes   916 Mbits/sec                  receiver