@8411guy where do you see the flow control setting on ER8411 ? I can't find it.

@8411guy I did more testing, I run my man mini with direct cat6a cable to my XB8 modem download 1.7Gbps Upload 52Mbps connect the same cable now to my TL-SG3428X switch (ER8411 is still my gateway...

@8411guy today I switched my WAN port from SFP+ port to one of the !Gbs ethernet port and set that port as a WAN. right after that I get 980Mbps download from the same ISP and same modem. if I...

@8411guy I experienced something interesting. I installed my firewall (Firewalla Gold Plus) between my er8411 and my switch (TL-SG3428X) using the SFP+ modules. my download speed went to 100Mbps...

@8411guy the MikroTik S+RJ10 didn't do anything for me either. I talk to support and they collected some screenshots and they said they get back to me.

@8411guy I tested with the media convertor as well and no difference for me either. :( on a call now with support and see if they have any suggestions.