Access Issues after M5 to NBac upgrades

Hello,

I have upgraded a site from Nanostion M5 to Nanobeam AC Backhauls. Now i lose randomly either all managed RB260gps POE switchs and Nanostation M2 devices o either ETH1 or ETH3. ETH5 which is still M5’s and has never been lost. the ARP table on the mik does not show any of the devices or they show up as the proper IP but all 00.00.00.00.00 for the MAC address.
I can see and access the back haul. I can not see the rb260gps switches or any access Points

The routerboard is setup as a Bridge.

Is this a Mik issues or something with the NanoBeams AC