In 4.3 and 4.4 (!!!) Nstream work very unstable.
Link are lose connect when I did bandwidthtest every 60-70 seconds, when I choose 5GHz-turbo - every 20-30 seconds
Under 3.30 every works fine......but not 4.4......

You have right, when I was turn off nstreme, link work good, under 5GHz and 5GHz-turbo.

In my opinion, nstreme in MT4.3 have bug!

on begining sorry for my english yes, on begining I upgrade licenses and firmware on all my board rbxx, next upgdade MT from 3.28 to 4.3. configuration my link: 2xRB433AH card: R5H ap bridge --1km-- station wds enable nstreme enable polling framer policy: best fit framer limit: 4000 link ccq: 95-100...

I upgrade from 3.30 to 4.30.
I have problem with this version because link are disconnect.