Hi
Any opinions?
I deployed one at night (replaced one SXT Lite5 on p2p link) and on stock ROS it was unusable - rebooted each time i changed somenthing in wireless and loosed these changes.
On current 6.41 is better i see higher latency but it can be related to interferences.
Signals looks better than on SXT more symetric and stable, on btest it can transfer more in N 
Tomorrow i replace second SXT.
Please Test NV2
What IPQ is used for LHG ac?
Wireless (Atheros IPQ4019)
Currently i use nstreme.
On 6.41 i have issues too with reboot and unsaved changes on wireless interface modifications. It worked on lab if wireless is not connected but after deployment and link connect i cant change settings.
Second LHG 5AC on lab is working perfect but wireless interface is not connected, will see tomorrow.
inform us about performance plz 
at what distance do you use them?
i currently run atom boards, but comparing to IPQ CPU seems it should be better
Distance: ~330m
btest LHG AC → wireless n nstreme → SXT Lite5 → switch tplink → gigabit fiber → switch tplink → rb750r2
ping LHG AC → wireless n nstreme → SXT Lite5 → switch tplink → omnitik
Small real traffic and OSPF communication goes thru link in parallel with btest, fiber have more free badhwith than needed
35Mbps? Well that sucks 
With 802.11 n device on one side, this tells nothing…
very bad
Ok i replaced second sxt:
Due to bugs in ROS: channel, tx power etc is not optimized. On current channel we have many interferences.
MT Support recommended to update to 6.42rc4 i updated to 6.42rc6 and change wireless settings works now. I tested nstreme, nv2 and 802.11 in AC on nstreme and nv2 it was unstable - frequent and random disconnections, traffic stops and wireless tx 6M.
In attachment test on 802.11 AC 20/40
Limit you Power about 12-15db to get -55 / -55
And test speed again!