I have problems with 2nd node poor connection, drops to low bandwidth 2.4 connection, for ages now, the latest version that is stable for me is 3004386_46061 which is pretty old now. So I decided to have another go. 5 mins after upgrade the 2nd node dropped its connection down to 2.4 and provided terrible speeds, just like previous versions. Did a factory reset from the the gui and the 2nd node would not be found, this happens most times I reset it, so did a hard reset on it, still would not connect. After a number of hard and soft resets it finally connected and has been stable on 5_2 back haul for 20 hours now
. I have done hard resets on previous versions and it hasn't worked so not claiming success just yet, but normally it only lasts a few in minutes so is much better then previous FWs. Will see how it goes over the next few days.