today upgraded ROS on RB532 from 2.9.24 to 3.28 and found that data transfer speed is about 25mb/s slower than was on 2.9.24.
Tryed to find what cause this speed loss but I found nothing. Then I do downgrade to 3.13 and found that is nothing changed.
Then finally downgrade to v2.9.51 and everything back to places.
I'm interested what can cause this speed loss and what i can do to fix that.
I'm talking about speed loss on ethernet ports(at this moment no wireless cards installed on that RB). Router is sharing one real ip address via nat(with conntrack enabled). Then tested speed all users was disconnected. At these conditions on v2.9.51 i get about ~60mbps on v3.x i get about ~35mbps.
P.S. 60mbps is acceptable for me, but maybe something know how to get a bigger speed without routerboard change?
CPU is already clocked to 330MHz 
