CCR2004-1G-12S+2XS bandwidth problem

Hello,

I am trying to use a CCR2004-1G-12S+2XS as my homelab core router, but the network speeds are not quite right.


I have a PPPoe connection 2000/1000Mbps, but speedtest only showing 20-30% of the max upload speed ( https://www.speedtest.net/result/16784188760 )
My setup, and what i tried with:

setup1:
ISP ONT 2.5G → SFP+ - RB4011 -1G ether → 1G ether - CCR2004 - SFP+ → SFP+ - PC (https://www.speedtest.net/result/16784919252 )

setup2:
ISP ONT 2.5G → SFP+ - CCR2004 - SFP+ → SFP+ - PC(https://www.speedtest.net/result/16784188760 )

setup3: This is the default, the upload speed is “acceptable”
ISP ONT 2.5G → SFP+ - RB4011 - 1G ether → 1G ether - PC (https://www.speedtest.net/result/16785538873 )

CPU:
Max 20% on download
Max 10% on upload

With setup1&2 i can copy with max speed between machines, so the cables are good
I tried to downgrade to:
routeros-6.47.8
routeros-6.49.11
routeros-7.9.2
routeros-7.15.3
routeros-7.16rc4 (testing)
but none of them solved the issue.

I’ve read the following, but no luck:
http://forum.mikrotik.com/t/ccr2004-1g-12s-2xs-slow-upload/175912/1
http://forum.mikrotik.com/t/rb5009-2-5gbe-problems/169157/21
http://forum.mikrotik.com/t/help-required-slow-upload-speeds-with-pppoe-connection/174186/1

i’ve tried to do without filters, Vlans, and tried on a “bare” system.

Any advice to solve this issue?