so fighting with my ISP.
Few days ago upgraded to MikroTik RB4011iGS+RM.
Added manually and imported firewall section, scrips and some more from old router.
All was fine, got 805-905MB. In the next morning I only have 100MB bandwidth.
So checked the config and under the interface > status > rate incoming is 100Mbps.
At interface > ethernet section incoming is marked 100MFull and 1000M Full.
Is that the ISP gpon problem or still I need to look somewhere in my end?
Connecting direct to ISP gpon I have 500mb. Changed gpons power supply, restarted, Rate in mikrotik 100MB.
I think the gpon converter is half dead.