rb5009 The rate is abnormal after pppoe dialing at the 10 Gigabit negotiation rate or the 2.5g negotiation rate

[felixka]

Possibly related: http://forum.mikrotik.com/t/rb5009-slow-speed-2-5g-bug-report-as-requested/155362/1
But it could also be something else. Without a full config (/system export hide-sensitive) it’s hard to tell.