Hello Everyone
I recently aquired from my friend RB750Gr3 with v6.43.7 RouterOS for tests. I was using TPLink and it was losing packets after I switched from 50/5Mbps connection to 1000/1000Mbps one. So I got this Mikrotik. It does not seem to lose packets like the old one, but is have poroblem for it being “slow”.
At the end of FTTH there is some kind of huawei router that I got from ISP. They bridged one port for me (Let’s call it INT_1 
), and I got one manually configured IP for myself.
When I connect my laptop to INT_1 and set network card to IP I get like 800/900 speeds. So I can assume that Huawei is working good
When I connect MikroTik to INT_1 and then connect laptop to it, i get around 480/540Mbps on same tests. And its 100% repeatable.
What Did I do wrong here? I only configured everything according to official guides (wiki).
I have set up only Bridge on interfaces 2-5 and interface 1 has IP and networks set from what ISP gave me.