OpenWRT slow throughput WAN

I installed OpenWrt Chaos Calmer V1.2.2-stable r48870 on Banana Pi R1 default settings, everything seams to be fine except some kind of traffic limiting. I have 1Gbps line, connected directly to PC I can get about 800Mbps up/down speed, but when connecting to Banana Pi R1 download rate stucks in about 5Mbps ( downloading file from is total disaster 150Kbps

Tried changing various settings (web interface), nothing helped, also tried to change patch cable and LAN port, same. I’m not network specialist, I can provide my network config or screens if required, but maybe this is something obvious in default configuration?

No problem in LAN. Speed is ~300Mbps. (Expected more from Gbps ports).

I’m not very good at linux so using only WEB interface (Powered by LuCI for-15.05 branch) and getting more and more disappointed.

Here is more details about system: Model Lamobo R1 Firmware Version OpenWrt Chaos Calmer V1.2.2-stable r48870 / LuCI for-15.05 branch (git-16.093.27241-7b0ce5c) Kernel Version 4.1.20

Some examples

ping -s 1000 (10 mins. no packet loss) 1008 bytes from ( icmp_seq=49 ttl=55 time=45.0 ms 1008 bytes from ( icmp_seq=50 ttl=55 time=45.0 ms 1008 bytes from ( icmp_seq=51 ttl=55 time=44.8 ms 1008 bytes from ( icmp_seq=52 ttl=55 time=44.9 ms

ifconfig, nothing special here too…

eth0      Link encap:Ethernet  HWaddr 08:00:27:00:2A:09
          inet addr:  Bcast:  Mask:
          inet6 addr: fd2c:690b:b618:0:a00:27ff:fe00:2a09/64 Scope:Global
          inet6 addr: fe80::a00:27ff:fe00:2a09/64 Scope:Link
          RX packets:68364404 errors:0 dropped:0 overruns:0 frame:0
          TX packets:41029140 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:86504527951 (80.5 GiB)  TX bytes:25167662987 (23.4 GiB)

And wget

[root@serv]# wget -O /dev/null
--2016-08-23 17:43:44--
Connecting to||:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 12500000 (12M) [application/octet-stream]
Saving to: “/dev/null”

24% [==================>                                                              ] 3,065,070    186K/s  eta 53s