Archer C7 router to FreeNAS low speed < 300Mbits/sec (Ethernet)

I can't figure out why the speed can't get above 314Mbits/sec between the server and router.

It seems that those are slow values.

It's a archer c7 (Gigabit) that should be able to deliver much more than that.

What speed do you have?

Thanks.

Accepted connection from 192.168.1.152, port 16456
[  5] local 192.168.1.1 port 5201 connected to 192.168.1.152 port 38967
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  32.4 MBytes   271 Mbits/sec
[  5]   1.00-2.00   sec  37.3 MBytes   313 Mbits/sec
[  5]   2.00-3.01   sec  37.0 MBytes   311 Mbits/sec
[  5]   3.01-4.00   sec  36.9 MBytes   310 Mbits/sec
[  5]   4.00-5.00   sec  36.8 MBytes   309 Mbits/sec
[  5]   5.00-6.00   sec  37.5 MBytes   314 Mbits/sec
[  5]   6.00-7.01   sec  35.4 MBytes   296 Mbits/sec
[  5]   7.01-8.00   sec  36.8 MBytes   310 Mbits/sec
[  5]   8.00-9.01   sec  36.0 MBytes   300 Mbits/sec
[  5]   9.01-10.01  sec  36.7 MBytes   308 Mbits/sec
[  5]  10.01-10.11  sec  3.75 MBytes   310 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-10.11  sec   367 MBytes   304 Mbits/sec                  receiver
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Server listening on 5201
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