V5.9 Nv2 performance improvement

it’s nice to see nv2 on ROS5.9 working, but all over the wireless pleasure and speeds i’m still having issues with ethernet interfaces, which stop possibilities of nv2 to work with it. As same as topic on http://forum.mikrotik.com/t/radius-server-not-working-in-2-8-11/127/1 , i have 1g ethernet interfaces freezing(actually stopping to transmit data) same on 5.5 5.6 5.7 5.8 5.9 of ROS, but have a solid ethernet connections on 4.17.

It is possible to insert on 4.17 wireless nv2 package same improvements as 5.8 or 5.9 packages of ROS 5.x series contains? Seems to be perfect in my situation.
Thanks